Collection Knives: For Knife Collectors and Custom Knife Enthusiasts

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Knife withdrawn from a private collection - In like new condition - Comes with original box - Checked and certified by our internal laboratory Coltelleria Collini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

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: -

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

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.