knives new life

PREVIOUSLY PURCHASED KNIFE, FROM A PRIVATE COLLECTION
* Origin: Acquired from a private seller, previously purchased
* Condition: Overall in excellent condition
* Commercially available: Discontinued
* Sharpening: Professionally resharpened
* Marks on blade: None
* Marks on handle: Minor signs of wear on the carbon fiber scales, visible mainly against the light
* Box: Included
* Sheath: Included
* Manuals, Certificates, and Warranties: Included
* Inspected and certified by our in-house laboratory

Intended use: sports / collection

Production type: industrial
Country of manufacture: Seki - Japan
Blade: ZDP-189 stainless steel, 67 HRC
Blade finish: Satin
Handle: Carbon fiber with stainless steel liners
Blade length: 70 mm.
Blade thickness: 2.5mm.
Closed length: 93mm.
Total length: 157mm.
Weight: 55g.
Closure: Liner Lock
Clip: Stainless steel, removable
Notes: Designed by Michael Walker - Sprint Run edition available only in 2010 - Withdrawn from a private collection, complete with box and manuals

Notes on the Designer

Michael Walker is to the knife industry what Michael Jordan is to basketball or Wayne Gretzky is to hockey. He shattered established standards, venturing into uncharted territory and elevating the art of knife-making to new heights of innovation and modernity.

In 1980, the folding knife industry had few locking innovations, and only the traditional Back Lock existed. In 1981, Walker invented, developed, and ultimately trademarked the Michael Walker LinerLock®, adding a leaf spring that locked the blade open, making it a true one-handed folding knife. He also included a latch to keep the blade closed by utilizing the force of the internal leaf spring, preventing it from opening in the user’s pocket.

This innovation paved the way for modern cutlery, enabling numerous new designs and future developments leading up to today’s SubFrame Lock, Frame Lock, Flipper Folder, and ball-bearing-equipped IKBS opening systems.

Other inventions include the “Lake and Walker Safety System” (LAWKS), BLADELock, Ball Bearing Lock, and Tough Lock.

Some of the manufacturers he has collaborated with include Spyderco, Columbia River Knife and Tool, Schrade, Böker, and Klotzli.

Walker’s knives and designs have inspired many other custom knife makers, notably Bob Terzuola and Ernest Emerson. Terzuola credits Walker with teaching him how to make a liner-lock folder, and Emerson has stated that seeing one of Walker’s knives at a gun show inspired him to become a knifemaker.

Walker’s knives can be found at the Artifex Gallery in Taos and in the most prestigious collections around the world.

PREVIOUSLY PURCHASED KNIFE, FROM PRIVATE COLLECTION
* Provenance: Withdrawn from a private individual, previously purchased
* Condition: Overall in excellent condition, with some small superficial aesthetic marks on the viteria and titanium handle which does not alter its technical specifications or concrete use
* Available on the market: Discontinued
* Sharpening: Factory
* Signs on blade: none
* Handle marks: small superficial aesthetic marks
* Box: Present
* Sheath: -
* Manuals, Certificates and Guarantees: -
* Controlled and Certified by our in-house laboratory

To celebrate ten years of producing some of the most robust and reliable knives in the industry, DPx Gear presents the Titanium Decade edition of its iconic HEST/F. Crafted with a Bohler M390 stainless steel Drop Point blade and embellished with the laser-engraved Mr. DP logo on both sides, this commemorative model combines aesthetics and performance.

Intended use: Sporty / Collection

Type of production: Industrial
Country of production: Italy
Blade: in stainless steel M390
Blade Finish: Laser Customized with Mr. DP Designs
Handle: 6Al4V titanium machined three-dimensionally with Mr. DP designs
Blade length: 75mm.
Blade thickness: 5mm.
Total length: 195mm.
Closed thickness: 14mm.
Weight: 162g.
Closure: Frame Lock with stainless steel casement
Clip: removable and reversible, deep pocket, stainless steel
Packaging: Cardboard box with DPX GEAR logos
Notes: opening on ball bearings - numbered edition with progressive number on the rear spacer - previously purchased, from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously purchased
* Condition: Like new, never used and never removed from its packaging
* Available on the market Limited edition of 130 pieces
* Sharpening: Factory sharpened
* Marks on blade: No
* Marks on handle: No
* Box: Present
* Sheath: /
* Manuals, Certificates, and Warranties: Present
* Checked and certified by our in-house laboratory

The M1A1 model is Extrema Ratio's personal interpretation, created to pay homage to the historic folding knife used by the Italian Army.

During World War II, the original knife was part of the British Army's equipment. At the end of the war, thanks to the “Marshall Plan” for European recovery, the Italian Army received some of the weapons and equipment supplied to the Allies during the war, including this multifunctional tool. It was later reproduced in Italy in three modified versions.

Extrema Ratio, to bid farewell to this historic and renowned knife, presents a final exclusive version, limited to only 130 pieces.

Like its predecessor, the M1A1 LAST CALL is equipped with a can opener, bottle opener, screwdriver, and knot-tying peg. The reversible clip is designed for maximum concealability.

The drop blade, like all the other tools listed above, features Geotech Camo customization, Extrema Ratio's innovative and original camouflage pattern, created using laser engraving.

The locking mechanism used is the tried and tested LINER LOCK. The handle consists of two anticorodal aluminum scales anodized in the brand new Tactical Mud color.

Type of production: industrial
Blade: N690Co 58HRC stainless steel with Geotech Camo finish
Country of production: Italy
Handle: Anticorodal in Tactical Mud color
Blade length: 70mm.
Blade thickness: 3mm.
Closed length: 99mm.
Total length: 168mm.
Weight: 124g.
Closure: Liner Lock
Clip: reversible and removable stainless steel
Notes: Screwdriver, can opener, bottle opener, knot untangler - serial number 81

Spyderco Native® 5 Lightweight Maxamet® combines the ergonomics and proven design of the Native 5 Lightweight model with Carpenter®'s advanced Micro-Melt® Maxamet® steel.

Maxamet is an extremely hard steel that outperforms traditional high-speed steels, approaching ultra-hard materials such as cemented carbides. Only a few companies, including Spyderco, have developed the techniques necessary to work, temper, and sharpen it, resulting in reliable, high-performance blades.

The full-flat-ground PlainEdge™ blade maximizes the qualities of Maxamet, offering strength, smoothness, excellent edge retention, and precision in the tip. The lightweight gray FRN handle with Bi-Directional Texturing™ ensures a secure grip, while the back lock mechanism and Round Hole™ make opening and use completely ambidextrous. All this is complemented by a four-position clip for versatile carrying.

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CTS Maxamet 67/68HRC Tool Steel
Blade finish: Stonewashed
Handle: Lightweight FRN
Blade length: 75mm.
Blade thickness: 3mm.
Closed length: 98mm.
Overall length: 175mm.
Closed thickness: 14mm.
Weight: 70g.
Lock: Back Lock
Clip: Stainless steel
Packaging: Cardboard box with Spyderco logos
Notes: Sprint Run Edition

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Used, overall in good condition, with slight signs of wear and tear.
* Commercially available: Discontinued
* Sharpening: Re-sharpened, sharpening can be improved.
* Marks on blade: Small signs of wear and tear.
* Marks on handle: Small signs of wear and minimal scratches, anodizing slightly faded by time in places
* Box: Present
* Scabbard: -
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Knife withdrawn from private collection - Ti-Rock model no. 38 of 100 pieces made by Extrema Ratio in collaboration with Coltelleria Collini - Knife discontinued since 2016

Intended use: collection / EDC / CQD

Type of production: industrial, limited
Blade: N690 stainless steel at 58HRC with compound type sharpening
Blade finish: burnished
Country of manufacture: Italy
Handle: anodized Titanium, machined from solid, with integral Frame Lock locking system with removable stainless steel strike and safety
Blade length: 75mm.
Blade thickness: 6.3mm.
Total length: 180mm.
Weight: 190g.
Clip: stainless steel, reversible, deep pocket, tip up
Notes: tapered skull crasher engaged in the tang 
Box: cardboard, numbered, with ExtremaRatio and Coltelleria Collini logos
Notes: Skull Crasher conical grafted in the tang - Made only in 100 numbered examples on blade and box

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: Like New
* Commercially available: Discontinued since 2014, limited to only 150 numbered pcs.
* Sharpening: Factory
* Marks on blade: None
* Marks on handle: None
* Box: Present - Original
* Scabbard: -
* Manuals, Certificates and Warranties: Warranty certificate with serial number, date of manufacture and signature.
* Checked and Certified by our in-house laboratory



Intended Use: Tactical / EDC

Production Type: Industrial
Country of Production: USA
Blade: sintered stainless steel CPM-154CM
Blade Finish: Stone Washed
Handle: G10
Blade length: 70mm.
Blade thickness: 5mm.
Total length: 178mm.
Thickness when closed: 17mm.
Weight: 190g.
Closure: Subliminal Frame Lock
Clip: Removable and reversible, stainless steel
Packaging: Cardboard box with Quartermaster logos, warranty certificate with date of manufacture, serial number and signature
Notes: ORB Pivot System ball bearing opening system - 2014 limited edition specimen of only 150, individually numbered on blade and box (specimen number #91)

Withdrawn from a private collection, this American Buck Model 500 made in 1987 turns out to be exclusive because of the gold leaf engraving on the blade commemorating the Loon, the iconic swimming bird of Ontario, Canada, and the limited edition of only 250 pieces - Like-new condition, never used, with original Buck warranties and manuals and accompanying 1987 Canadian $1 coin, also dedicated to the Loon - Checked and certified by our in-house Coltelleria Collini laboratory.

Intended Use: Collection

Type of production: Industrial
Blade Production: USA
Blade: Engraved 420HC stainless steel
Blade Finish: Polishing
Handle: Walnut wood and Alpacca (Nickel and Silver alloy)
Blade Length: 78mm.
Blade thickness: 2.5mm.
Length closed: 111mm.
Total length: 187mm.
Thickness when closed: 18mm.
Weight: 135g.
Closure: Back Lock
Package: wooden box, original care and maintenance manuals and warranty certificate of the time
Notes: Limited edition made in only 250 numbered examples on the blade (example 169 of 250) - 1987 specimen withdrawn from private collection, in like-new condition.

Knife collected from private collection - Limited edition "Sprint Run" model remained in production only in 2010 - Like-new condition, comes with original box, manuals, factory sharpening, never carried in pocket or used - Checked and certified by our in-house lab.

Intended use: sporting / collection

Production type: industrial
Country of manufacture: Seki - Japan
Blade: Stainless steel ZDP-189
Blade finish: Satin finish
Handle: Carbon fiber with stainless steel liners
Blade length: 70mm.
Blade thickness: 2.5mm.
Length closed: 93mm.
Total length: 157mm.
Weight: 55g.
Closure: LinerLock
Clip: Stainless steel, removable
Notes: Design by Michael Walker - Sprint Run Edition released only in 2010 - Collected from private collection, exactly like new, with box and manuals

Designer Notes

Michael Walker is to the knife industry what Michael Jordan is to basketball or Wayne Gretsky is to field hockey. He shattered established standards, jumping into uncharted territory and elevating the art of cutlery to greater heights of innovation and modernity.

In 1980, the folding knife industry had few locking innovations and only the traditional Back Lock existed. In 1981 Walker invented, developed and eventually trademarked the Michael Walker LinerLock® adding a leaf spring that locked the blade open, making it a true one-handed openable folding knife. He also included a latch to hold the blade closed using the force of the inner folder spring so it wouldn't open in a pocket to the user.

This innovation of his opened the door to modern cutlery, allowing for multiple new designs and future developments up to today's SubFrame Lock, Frame Lock, Flipper Folder and IKBS ball bearing opening systems.

Other inventions include the "Lake and Walker Safety System" or LAWKS, BLADELock, Ball bearing lock, and Tough Lock.

Some of the manufacturing companies he has worked with include Spyderco, Columbia River Knife and Tool, Schrade, Böker, and Klotzli.

Walker's knives and designs have inspired many other custom knife makers, most notably Bob Terzuola and Ernest Emerson. Terzuola credits Walker with teaching him how to make a linerlock folder and Emerson said that seeing a Walker knife at a gun show gave him the inspiration to become a knifemaker.

Walker's knives can be found at the Artifex Gallery in Taos and in most prestigious collections around the world.