Approved - knives withdrawn from private collections, checked, overhauled and certified by Coltelleria Collini

PREVIOUSLY PURCHASED KNIFE, FROM A PRIVATE COLLECTION
* Origin: Acquired from a private seller, previously purchased
* Condition: In excellent mechanical condition - good cosmetic condition
* Commercially available: Discontinued
* Sharpening: Professionally resharpened
* Marks on blade: Several signs of oxidation on the blade and minor abrasions, which do not compromise its practical use
* Marks on handle: None
* Box: Missing
* Sheath: In excellent condition
* Manuals, Certificates, and Warranties: None
* Inspected and certified by our in-house laboratory

Intended Use: Tactical

Manufacturing Type: Industrial
Country of Manufacture: USA
Blade: Full tang, CPM-S30V steel
Blade Finish: Tungsten DLC
Handle: G-10 with 3D machining
Blade length: 105 mm.
Blade thickness: 4.5 mm.
Overall length: 205 mm.
Balance: 1.5 cm rearward
Weight: 264 g.
Sheath: thermoformed Kydex
Notes: designed by Mick Strider

KNIFE PREVIOUSLY PURCHASED, FROM A PRIVATE COLLECTION
* Origin: Acquired from a private individual, previously purchased
* Condition: Overall in excellent condition
* Commercial Availability: Discontinued in this steel variant
* Sharpness: Factory-sharpened
* Marks on blade: None
* Marks on handle: Minor cosmetic signs of wear on the clip and screws
* Box: Included
* Sheath: -
* Manuals, Certificates, and Warranties: Included
* Inspected and certified by our in-house laboratory

The Microtech Socom Elite is one of the most iconic folding knives produced by Microtech, prized for its combination of durability, ergonomics, and reliability. Designed for professional and tactical use, over the years it has also established itself as a benchmark among collectors and enthusiasts of high-end cutlery.

The model presented here, manufactured in 2019, features a blade made of Carpenter CTS-204P steel, one of the best high-performance stainless steel alloys in its class, known for its excellent edge retention, high corrosion resistance, and outstanding wear resistance. The black/dual-tone finish contributes to its particularly aggressive and professional appearance.

The aluminum handle with non-slip inserts ensures a firm and comfortable grip even under the most demanding conditions, while the manual thumb stud opening system and the proven liner lock mechanism guarantee quick deployment and safety during use.

Thanks to Microtech’s signature build quality and a design that has become an industry classic, the Socom Elite is an excellent choice for both everyday use and for collectors seeking one of the most iconic models in the American brand’s modern lineup.

Intended Use: Tactical, EDC

Production Type: Industrial
Country of Manufacture: USA
Blade: Carpenter CTS-204P stainless steel
Blade Finish: “Normal” (Black PVD + Satin)
Handle: Aluminum with non-slip inserts
Blade Length: 101mm
Blade thickness: 4 mm
Closed length: 127 mm
Overall length: 228 mm
Closed thickness: 15 mm
Weight: 157 g
Lock type: Liner Lock
Clip: Stainless steel, removable
Packaging: Microtech box with manuals
Notes: Previously purchased knife, from a private collection

KNIFE FROM A PRIVATE COLLECTION
* Origin: Previously purchased knife from a private collection
* Condition: 2008 model, overall in excellent condition
* Commercial Availability: Discontinued
* Sharpness: Factory-sharpened, could be improved
* Blade Condition: Minor cosmetic marks on the DLC finish due to age
* Handle Condition: None
* Box: -
* Sheath: Included
* Manuals, Certificates, and Warranties: -
* Inspected and Certified by our in-house laboratory

The Zero Tolerance 0100 is one of the first knives produced by Zero Tolerance, the premium division of Kai USA, which was launched in 2006 to develop professional tools for military personnel, law enforcement, and first responders. The 0100 model was, in fact, one of the first three fixed-blade knives in the original lineup, alongside the 0121 and 0150 models.

The design bears the unmistakable stylistic signature of Ken Onion, the renowned American designer already responsible for numerous successes at Kershaw. The distinctive “S”-curved blade offers an unusual combination of cutting ability, power, and precision, making the ZT0100 suitable for both tactical applications and the most demanding outdoor use.

For its construction, Zero Tolerance chose CPM 3V, a steel then considered cutting-edge for its strength and impact resistance, paired with a tungsten DLC coating and three-dimensionally machined G-10 scales. This combination helped solidify the brand’s early reputation as a manufacturer of “overbuilt” knives, designed without compromise for field use.

Today, the ZT 0100 is a discontinued model particularly prized by collectors, as it is considered one of the knives that helped define the Zero Tolerance brand’s identity in its early years.

Intended Use: Tactical / Sporting / Collectible

Production Type: Industrial
Country of Manufacture: USA
Blade: Full tang, CPM-3V carbon steel
Blade Finish: Tungsten DLC coating
Handle: G10
Blade Length: 146mm.
Blade thickness: 4.8 mm.
Overall length: 267 mm.
Weight: 317 g.
Sheath: Nylon, belt-mounted, with thermoformed Kydex lining
Packaging: -
Notes: Previously purchased knife, from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: previously purchased
* Condition: in perfect mechanical condition, aesthetically shows some abrasion and signs of wear due to the passage of time
* Available on the market: iconic model from the early 2000s, now out of production
* Sharpness: Factory sharpness, could be improved
* Marks on blade: some minor abrasions due to age
* Marks on handle: cosmetic abrasions due to age
* Box: -
* Manuals, certificates, and warranties: -
* Checked and certified by our in-house laboratory

Directly derived from military specifications, this folding knife is designed to replace a fixed blade in the most demanding operational situations. To ensure maximum reliability, extremely robust materials, increased thicknesses, and a solid and secure back lock opening/closing system have been used.

A manual safety lock ensures maximum protection during use, drastically reducing the risk of accidental closure. When inserted in the closed position, it also prevents the knife from being immediately used against the operator in the event of theft.

Materials and workmanship
All components are machined from solid blocks using high-precision CNC machines, while assembly, adjustment, and sharpening are carried out by hand. The blade is made of N690 cobalt stainless steel, known for its high mechanical strength, great cutting ability, edge retention, and excellent corrosion resistance. It has a flat grind and a hardness of 58 HRC.

The scales are made of Anticorodal, an aluminum alloy that is highly resistant to stress and oxidation. The tang, made of hardened N690, acts as an effective emergency glass breaker. Screws, pins, and clips are made of burnished stainless steel, while the blade, lever, and tang are protected by Testudo treatment, which is highly resistant to abrasion and oxidation. The scales are black anodized.

Intended use: tactical/military

Blade: N690Co 58HRC stainless steel with burnished “testudo” finish
Country of manufacture: Italy
Blade length: 95mm.
Blade thickness: 6.3mm.
Closed length: 127mm.
Total length: 220mm.
Handle: Anticorodal, 4.5mm thick
Weight: 200g.
Closure: Back Lock with additional safety system, also functioning when the blade is closed
Clip: removable and reversible, stainless steel
Sheath: -
Notes: previously purchased knife from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used
* Condition: Like new, never used, no packaging
* Available on the market: Out of production
* Sharpness: Factory sharp
* Marks on blade: None
* Marks on handle: None
* Box: -
* Sheath: -
* Manuals, Certificates, and Warranties: -
* Checked and certified by our in-house laboratory

Intended use: Sports / Tactical

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade finish: Tigerstripe black-oxide BlackWash
Handle: Titanium and G10
Blade length: 95mm.
Blade thickness: 4mm.
Closed length: 132mm.
Total length: 241mm.
Weight: 196g.
Closing system: Frame Lock
Clip: removable and reversible, stainless steel with Black PVD treatment
Opening system: Carson Flipper type on KVT ball bearings
Packaging: cardboard box with Zero Tolerance logos
Notes: knife previously purchased and used, from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Acquired from a private owner, previously purchased and used
* Condition: Overall good, with marks and scratches on the blade and guard. The sheath shows signs of wear.
* Commercial availability: Discontinued
* Edge: Original
* Box: Included
* Sheath: Included
* Manuals, Certificates, and Warranties: Included
* Inspected and Certified by our internal laboratory

The ExtremaRatio 39‑09 Operativo is a tactical collector's knife that combines the prestigious Italian military tradition with the precision of modern engineering. Inspired by the silhouette of the 1939 "paratrooper assault dagger", this model is built with premium materials and military-grade finishes that meet operational standards.

Its matte black coating, absence of flashy logos, and overall sturdiness make it ideal for discerning collectors, tactical blade enthusiasts, and those who value operational tools with strong symbolic meaning.

Every detail, from the Böhler N690 steel blade to the Forprene handle, is designed to ensure a balance of aesthetics, functionality, and reliability.

Intended use: collection / display / symbolic tactical use
Production type: high-end industrial manufacturing
Country of production: Italy
Blade: Böhler N690 steel, hardened (~ 58 HRC)
Blade finish: black oxide coating (MIL‑C‑13924 burnishing, non-reflective)
Handle: black Forprene
Blade length: 195 mm
Blade thickness: 6.3 mm
Total length: 319 mm
Weight: 338 g
Locking mechanism: fixed blade (not a folding knife)
Packaging: standard manufacturer box / rigid thigh sheath / nylon leg sheath

Knife withdrawn from a private collection

• Origin: Withdrawn from a private owner, previously purchased and used
• Condition: Like new
• Availability: Discontinued
• Factory edge: Yes
• Blade marks: None
• Handle marks: None
• Box: Not included
• Sheath: Not included
• Manuals, Certificates, and Warranties: Not included
• Inspected and certified by our internal laboratory

One of our first ZT models and still one of the most popular, now offered in a limited edition with a CPM-MagnaCut steel blade.

The 0350 is a large and aggressive knife, yet compact and light enough to make it a practical and highly effective EDC. It features ZT's assisted opening system: the blade deploys quickly and easily, even with gloves, thanks to the ambidextrous flipper. The blade is finished with a bold and distinctive tiger-stripe pattern created with tungsten DLC coating.

Intended use: Tactical / Military

• Production type: Industrial
• Country of origin: USA
• Blade material: CPM-MagnaCut steel
• Blade finish: Tungsten DLC Coating
• Handle: G-10
• Blade length: 90mm
• Blade thickness: 3mm
• Closed length: 115mm
• Overall length: 195mm
• Closed thickness: 13mm
• Weight: 162g
• Locking mechanism: Liner Lock
• Clip: Removable, multi-position, stainless steel
• Packaging: Not included
• Notes: Sprint Run edition with CPM-MagnaCut steel - Design by Mick Strider and Ken Onion - SpeedSafe opening system

• Origin: Withdrawn from a private owner, previously purchased
• Condition: Overall in excellent condition
• Availability: Discontinued
• Sharpening: Original sharpening
• Blade marks: /
• Handle marks: Minor marks
• Box: /
• Sheath: /
• Manuals, Certificates, and Warranties: /
• Inspected and Certified: By our internal laboratory

The Extrema Ratio M.P.C. (Multi Purpose Compact) is an Italian-made folding knife designed to offer the durability of a fixed-blade knife in a compact and versatile format. Made with high-quality materials and precision techniques, it is ideal for tactical uses and field operations.

• Intended use: Tactical / Multi-role
• Production type: Industrial
• Country of origin: Italy
• Blade: Böhler N690 steel (58HRC)
• Blade finish: Testudo (brunished)
• Handle: Black anodized Anticorodal aluminum alloy
• Blade length: 113 mm
• Blade thickness: 6 mm
• Closed length: 149 mm
• Total length: 260 mm
• Closed thickness: 20 mm
• Weight: 240 g
• Locking system: Back lock with additional safety system
• Clip: Removable and reversible, brunished stainless steel
• Packaging: -
• Notes: The blade features partial serration for efficient cutting of cables and high-resistance fabrics.

The M.P.C. was developed to replace or complement a fixed-blade knife, combining the portability of a folder with the strength required for heavy-duty tasks. Its thick blade and robust locking system make it one of the most reliable tools in its category.

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: Overall in good condition
* Commercially available: Still in catalog.
* Sharpening: Factory.
* Marks on blade: Marks and abrasions.
* Marks on handle: Small signs of wear and tear.
* Box: Present, not complete (absence of warranties and plastic bags).
* Scabbard: Present, in good condition.
* Manuals, Certificates and Warranties: - -
* Checked and Certified by our in-house laboratory

Intended Use: Tactical/Military/Collection

Production type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co 58HRC
Blade Treatment: Burnishing MIL-C-13924
Handle: Polymer
Blade Length: 167mm.
Blade thickness: 6.3mm.
Total length: 270mm.
Weight: 224g.
Sheath: Nylon thigh piece
Packaging: cardboard box with Extrema Ratio logos
Notes: Limited edition in 2018 pieces - Edition to celebrate 100 years of the Italian Ardites

The AITOR Pocket Knife 284.172 Gran Ranchero is a vintage multipurpose knife, renowned for its quality and versatility. Made in Spain between the 80s and 90s, this knife is ideal for camping, hiking and other outdoor activities thanks to its numerous integrated tools.

Main features
Model: 284.172 Gran Ranchero
Manufacturer: AITOR
Origin: Spain
Blade Material: High quality stainless steel
Handle: Durable synthetic material with non-slip finish
Total Length: About 20cm (open)
Closed length: Approx. 11cm
Weight: Lightweight and easy to carry
Multipurpose Tools
Main blade: For cutting and peeling
Corkscrew: For opening bottles of wine
Can opener: For opening cans
Bottle opener: For opening bottles with crown caps
Spoon: Useful for outdoor meals
Fork: To complete the camping cutlery set
Functionality
Compact Design: Easy to carry, fits conveniently in your pocket or backpack
Safe locking system: Ensures that the blades remain in position whether open or closed, reducing the risk of accidents
Ergonomic handle: Offers a secure and comfortable grip
Uses
Outdoor activities: Camping, hiking, fishing
Daily Use: Perfect for small craft jobs and as an emergency tool
Collectibles: A quality piece for vintage knife collectors
Final Considerations

The AITOR Pocket Knife 284.172 Gran Ranchero represents an excellent example of Spanish craftsmanship in the knife industry. With its combination of functionality and durability, it is an excellent choice for anyone who appreciates high-quality tools.

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased - year of production 2004 - 1st series Shrapnel with double guard branch and kydex sheath
* Conditions: Like new
* Commercially available Yes
* Sharpening: Original
* Marks on blade: NO
* Signs on handle: NO
* Packaging: NO
* Sheath: In kydex
* Manuals, Certificates and Guarantees: YES
* Checked and Certified by our internal laboratory

Intended Use: Military/Tactical

Type of production: industrial
Blade production: Italy
Blade: N690Co 58/60HRC stainless steel
Blade treatment: MIL-C 13924 bluing
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Closed length: 142mm.
Total length: 210mm.
Weight: 210g.
Clips: absent
Sheath: ABS sheath with Tek-Lok attachment with automatic knife retention system.
Note: -

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased - Limited Edition supplied by Extrema Ratio for Task Force 45 (TF-45) joint military unit of Italian special forces, operating in Afghanistan from at least June 2006 to 2016, as part of Operation "Sarissa" of the International Security Assistance Force (ISAF).
* Conditions: Like new
* Commercially available No in the version with engraving -
* Sharpening: Original
* Marks on blade: NO
* Signs on handle: NO
* Packaging: YES
* Sheath: -
* Manuals, Certificates and Guarantees: YES
* Checked and Certified by our internal laboratory

Intended use: Sport / Tactical

Type of production: Industrial
Blade production: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: Testudo
Handle: Anticorodal
Blade length: 125mm.
Blade thickness: 3mm.
Closed length: 150mm.
Total length: 270mm.
Closed thickness: 17mm.
Balancing: -
Weight: 120g.
Closure: Liner Lock
Clip: removable in stainless steel
Scabbard: -
Packaging: cardboard box with Extrema Ratio logos
Note: -

KNIFE WITHDRAWAL FROM A PRIVATE COLLECTION
* Type: Previously purchased
* Condition: in like new condition
* Commercially available: discontinued
* Sharpening: factory sharpening
* Marks on blade: no marks
* Marks on the handle: no marks
* Box: original ZT box
* Manuals, Certificates and Warranties: -
* Checked and certified by our internal laboratory Coltelleria Collini

Intended use: Sports / Collection

Type of production: Industrial
Production Lama: USA
Blade: CTS-204P stainless steel
Blade treatment: stone washed and satin finish
Handle: Titanium with anodized spacers
Blade length: 87mm.
Blade thickness: 4mm.
Closed length: 112mm.
Total length: 193mm.
Thick when closed: 14mm.
Weight: 178g.
Closure: Framelock
Clip: Removable, reversible, in stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmirty Sinkevich - KVT opening on ball bearings

Knife from a private collection - Iconic and sought after model designed by Ken Onion and Mick Strider - Out of production and no longer available - Perfect in all, like new, serial 1544, does not have any kind of sign or defect - The knife shows an uncertainty at the tip, on the sharpening, which is slightly different; presumably already produced in this way by ZT - The sharpening is good and shows no signs of wear, presumably the sharpening is the original factory - Accompanied by original Zero Tolerance box, but referred to the model 0301 with green G10 handle - Checked and certified by our internal laboratory

Intended Use: Collection / Tactical / Military

Production type: Industrial
Country of Production: USA
Blade: Steel CPM-S30V
Blade Finish: Tigerstripe - Tungsten DLC Coating
Handle: Titanium and G-10 with 3D finish
Blade Length: 95mm.
Blade thickness: 4mm.
Length closed: 133mm.
Total length: 218mm.
Thickness when closed: 17mm.
Weight: 232g.
Closure: Frame Lock
Clip: Removable, Multiposition, Stainless Steel
Package: Cardboard box with Zero Tolerance logos (the box refers to a different model, 0301)
Notes: Design by Mick Strider and Ken Onion - SpeedSafe opening system - Like new - Retired from prvated collection