Collection Knives: For Knife Collectors and Custom Knife Enthusiasts

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased.
* Condition: Overall in good condition, with some signs of wear and tear.
* Commercially available: 1993 model in G-2 steel, discontinued
* Sharpening: Factory.
* Marks on blade: None
* Marks on handle: A few signs of wear and time.
* Box: Absent
* Scabbard: /
* Manuals, Certificates and Warranties: /
* Checked and Certified by our in-house laboratory

Intended Use: Sporting/Collection

Production Type: Industrial
Country of Production: Japan
Blade: Stainless steel G-2
Blade Finish: Satinized
Handle: Stainless steel
Blade length: 50mm.
Blade thickness: 2.5mm.
Length closed: 77mm.
Total length: 126mm.
Thickness when closed: 6mm
Weight: 71g.
Closure: Back Lock
Clip: stainless steel
Packaging: -
Notes: previously purchased knife from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased.
* Condition: Overall in very good condition
* Commercially available: Discontinued
* Sharpening: Factory sharpened
* Marks on blade: None
* Marks on handle: A few small marks on steel heads.
* Box: Present
* Scabbard: Present
* Manuals, Certificates and Warranties: /
* Checked and Certified by our in-house laboratory

Intended Use: Collection / Gentleman

Type of Production: Semi-Industrial
Country of Production: Japan
Blade: Stainless steel AUS6
Blade treatment: Satin finish
Handle: Mother of pearl and stainless steel heads
Blade length: 40mm.
Blade thickness: 2mm.
Length closed: 55mm.
Total length: 97mm.
Weight: 14g.
Closure: Back Lock
Sheath: small blue velvet case with Al-Mar Knives logos
Packaging: cardboard box with Al-Mar Knives logos.
Notes: very rare knife produced in the 1980s withdrawn from private collection

This special edition in 250 pieces, proposed on the occasion of the 25th anniversary of the brand, maintains the shape of the original, but with materials and finishes corresponding to the current production.

The K1 is equipped with a modified spear point profile blade, characterized by a tip that combines the 40° "tanto" profile with the more traditional European one, creating a sharp but very solid hybrid which, with the false false edge, makes it particularly effective in jab. The bevel is high, allowing for a very effective cutting angle.

The blade is immediately recognizable by the fenestration at the heel, which allows for considerable lightening without compromising its strength. It is made of Böhler N690 steel, with heat treatments that bring its hardness to 58 HRC for the best combination of edge hold and resistance. The finish is satin with flat grinding.

The handle, in anodized Anticorodal alloy, compared to the original presents the lightening on the sides that make the Extrema Ratio knives immediately distinguishable, but maintains the arched shape and the lateral "bellies" of the K1, offering an excellent grip both in the "saber" than in the "reverse" grip.

The terminal part of the handle curves to form a sort of hook which allows particularly easy and rapid extraction from the scabbard, while the tang protrudes from it with a triangular cusp which acts as a glass breaker with a slot which allows the knife to be equipped of lasso.

The leather scabbard faithfully reproduces the original while maintaining both the qualities of ease and speed of extraction. The carry can take place in an upside-down axillary position, horizontally on the belt or tactically on the thigh.

The K1 equipment is completed with a polypropylene case ‌, complete leather sheath and underarm shoulder strap.

WEIGHT g.: 493
WEIGHT OZ.: 17.39
BLADE LENGTH (MM): 210
BLADE LENGTH (IN): 8.26
TOTAL LENGTH (MM): 351
TOTAL LENGTH (IN): 13.81
BLADE THICKNESS (MM): 6.3
BLADE THICKNESS (IN): 0.25
BLADE MATERIAL: BÖHLER N690 STEEL (58HRC)
BLADE FINISH: SATIN
BLADE GRINDING: FLAT EDGE
HANDLE MATERIAL: ANODIZED ANTICORODAL ALUMINUM

Knife withdrawn from a private collection - In like new condition - Comes with original box - Checked and certified by our internal laboratory Coltelleria Collini

Intended use: Sports / Collection

Type of production: Industrial
Production Lama: Taiwan
Blade: AUS-8A stainless steel
Blade treatment: -
Handle: Aluminum 7075 and G-10
Blade length: 195mm.
Blade thickness: 4mm.
Total length: 425mm.
Thick when closed: -
Balancing: -
Weight: 425g.
Closure: Tri-Ad Lock
Clip: Reversible and removable, in stainless steel
Sheath: -
Packaging: cardboard box with Cold Steel logos
Note: -

Knife withdrawn from private collection, dating back to the late 1980s, overall in very good condition - Never used, still has factory thread - Checked, certified by our in-house lab.

Intended use: Tactical / Collection

Type of production: handcrafted
Country of manufacture: USA
Blade: O1 carbon steel
Blade finish: satin finish
Handle: micarta and brass
Blade length: 190mm.
Blade thickness: 5.5mm.
Total length: 307mm.
Balance: on the guard branch
Weight: 414g.
Sheath: Leather
Notes: knife withdrawn from private collection dating back to the late 1980s, overall in very good condition

THE BRAND
Exclusive collaboration between Coltelleria Collini and Extrema Ratio marketed under the brand KNIVES.IT. 

TECHNICAL DATA SHEET
Intended Use: Collection / Tactical / Neck knife
Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade finish: Black PVD cat. MIL-C-13924
Handle: Stainless steel N690Co 58/60HRC
Blade length: 40mm.
Blade thickness: 5.5mm.
Total lenght: 166mm.
Weight: 86g.
Sheath: optional (available separately) in Kydex, handcrafted by the Italian Knife Maker Simone Tonolli.
Package: cardboard box with Extrema Ratio logos
Notes: knife created and manufactured by Extrema Ratio - each knife is numbered - Design by LoTactical

HISTORY
The Tengu takes its name from a mythical creature of Japanese folklore that is represented with both human and raven features, they had the reputation of being great warriors and legends say that some founders of martial arts were trained by them.

- It is designed to be used in many different grips, but is especially effective in the reverse grip.
- Designed to be carried in a variety of ways, whether as a neck knife, under shirt, clipped in a pocket or around the waist using optional systems such as Ulti-Clip or Tek-Lok or various M.O.L.L.E. type attachments.
- With its thickness of 5.5 mm. is extremely robust and thanks to the shape of the handle is comfortable even by those with large hands or those who want to use it with tactical gloves.
- The blade is compact, robust and very functional for both precision cutting and hard materials thanks to the serrated part on the back. The tanto-shaped tip is very robust and optimal for engraving work.

Intended use: Outdoor / Tactical

Type of production: semi-industrial
Country of production: USA
Blade: full tang in CPM-3V steel
Blade treatment: satin finish
Handle: Micarta
Blade length: 195mm.
Blade thickness: 5mm.
Total length: 327mm.
Balancing: advanced
Weight: 380g.
Sheath: in leather
Packaging: Cardboard box with Bark River logos
Note: -

Intended use: key chain / collection

Type of Industrial Production
Blade: stainless steel 420
Production Country: Japan
Handle: Steel plated gold and Chinese lacquer red cinnabar
Blade length: 37mm.
Blade Thickness: 1.5mm.
Overall length: 91mm.
Closed Length: 54mm.
Closing system: -
Weight: 36g.
Chain and key ring: Brass
Packaging: in brown velvet box with logos Kai Cutlery
Notes: very rare product in the late '70s, brand new, in perfect condition

Kiku Matsuda Knives - Knife KM-340 - craft knife

Intended Use: Collection / Sports / Tactical

Unique and no longer produced by Kiku

Type of production: Artisan
Production Lama: Japan
Blade: carbon steel 61HRC D2
Treatment Lama: acid
Handle: Black G10
Blade length: 195mm.
Blade thickness: 5mm.
Length closed: -
Overall length: 340mm.
Thick when closed: -
Balancing: -
Weight: 440g.
Closing: -
Clip: -
Sheath: Kydex attack with Tek-Lok
Packaging: -
Notes: Kiku Matsuda won in 2007 the prestigious prize at the Blade Show "Knife Of The Year Awards" with a project in collaboration with SOG Knives

This wonderful gentleman from the great design features and excellent finishes, Viper reiterates that not only knows how to treat the product in detail, but also manages to pull refined aesthetic solutions and cutting-edge.

Blade: Stainless Steel Damascus
Body: Stainless Steel Damascus
Lock: Frame Lock
Closed Length: 7.5cm.
Length open: 12.5cm
Blade length: 4.5cm.
Weight: 35g.
Clip: Stainless Steel
Handle: Fossil mammoth ivory hand-engraved (engraving may differ from the one shown in picture)
Package: wooden box with suede interior. Certificates of authenticity and warranty. Numbered edition with serial number imprinted on the blade and certificates.

This wonderful gentleman from the great design features and excellent finishes, Viper reiterates that not only knows how to treat the product in detail, but also manages to pull refined aesthetic solutions and cutting-edge.

Blade: Stainless Steel Damascus
Body: Stainless Steel Damascus
Lock: Frame Lock
Closed Length: 7.5cm.
Length open: 12.5cm
Blade length: 4.5cm.
Weight: 35g.
Clip: Stainless Steel
Handle: wood cocobolo
Package: wooden box with suede interior. Certificates of authenticity and warranty. Numbered edition with serial number imprinted on the blade and certificates.

Palmerino horn cattle PA2C20 two knives - knife

The production of Scarborough has not devoted much attention to penknives.
It was, however, made a template from the desk, which in the past was used to make the tip of the quill pens and pencils.
This sharpener Scarperia was always devoid of spring and could have from one to two blades; unmistakable the shape of the handle, in a single piece of horn.
In the catalogs of the early years of the twentieth century these items were listed as "sharpeners use Palmerini" which was actually the name of a renowned manufacturer of the nineteenth century.
Proposed model is at the tip of the horn two blades.

Stainless steel blade 440.
Blade length 4.6 cm.
Blade thickness 2.5 mm.
Overall length 15 cm.
Weight 40 gr.

This wonderful gentleman from the great design features and excellent finishes, Viper reiterates that not only knows how to treat the product in detail, but also manages to pull refined aesthetic solutions and cutting-edge.

Blade: Stainless Steel Damascus
Body: Stainless Steel Damascus
Lock: Frame Lock
Closed Length: 7.5cm.
Length open: 12.5cm
Blade length: 4.5cm.
Weight: 35g.
Clip: Stainless Steel
Handle: ebony
Package: wooden box with suede interior. Certificates of authenticity and warranty. Numbered edition with serial number imprinted on the blade and certificates.

Cold Steel Espada Extra Large CPM‑S35VN is the ultimate high-performance design for those seeking an imposing yet elegant folding knife. Inspired by the tradition of the Spanish navaja, this modern “pocket sword” combines premium CPM‑S35VN steel with robust and refined construction: mirror-polished blade, G‑10 handle, and polished 7075 aluminum frame. Thanks to the patented Tri‑Ad Lock mechanism, the Espada XL offers exceptional shock resistance, withstanding loads up to 600 lb in real-world testing. Despite its 7.5″ blade (approx. 191 mm) and total length of 16.75″ (approx. 425 mm), the knife remains surprisingly pocketable and accessible — a no-compromise heavy-duty tool for collectors, outdoor enthusiasts, LE operators, and bold design lovers.

Intended use: Sport / Defense / Collection
Production type: Industrial
Country of origin: Taiwan
Blade: CPM‑S35VN stainless steel
Blade finish: Polished
Handle: Black G‑10 with polished 7075 aluminum reinforcements
Blade length: 7.5″ (approx. 191 mm)
Blade thickness: 4 mm (0.157″)
Closed length: 9.25″ (approx. 235 mm)
Total length: 16.75″ (approx. 425 mm)
Closed thickness: (to be verified)
Weight: 16 oz (approx. 454 g)
Locking mechanism: Tri‑Ad Lock
Clip: Tip-up, right/left
Packaging: (to be verified)
Notes: High-strength Tri‑Ad Lock mechanism; high-performance CPM‑S35VN blade.