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Home Products Custom Koschei Prototype, Hand Ground High Polish M390 Blade, Carbon Fiber Chassis S/N 008

Price$1,695.00
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Custom Koschei Prototype, Hand Ground High Polish M390 Blade, Carbon Fiber Chassis S/N 008

by Heretic Knives

SKU 1152069

Date Added 08/26/2026

# Available 1

Price $1,695.00

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Overview

DESCRIPTION 

Heretic Knives Custom Koschei Prototype, Hand Ground High Polish M390 Blade, Carbon Fiber Chassis S/N 008

Koschei, known as "the deathless" or "the Immortal", is a major, malevolent sorcerer in Slavic folklore. Depicted as an emaciated, skeletal old man, with a withered appearance. His tale tells of him hiding "his death" in nested items (like a needle that's in an egg that's in a duck that's in a chest that's buried) and always being a malevolent rival figure, who competes for (or entraps) a male hero's love-interest.

The Koschei is a brand new offering from Heretic Knives. It features a crossbar lock and scales that can be taken off without removing the pivot. The wrap around backspacer is what sets this one apart from the rest and is absolutely gorgeous! This custom model features carbon fiber handle scales. Hand ground high polish M390 blade. Fresh from Bladeshow Texas 2026, and marked prototype with only 23 made.  

FEATURES 

  • Overall Length: 8.20"
  • Blade Length: 3.43"
  • Blade Material: M390
  • Blade Thickness: 0.15"
  • Handle Material: Carbon Fiber
  • Weight: 3.77oz
  • Closed Length: 4.63"
  • Knife Category: Manual
  • Action: Crossbar Lock
  • Blade Style: Single Edge
  • Country of Origin: USA

 

Comes with the original box, zipper case, and COA. Has a couple very fine/light scratches on the mirror finish, overall Excellent condition. 

Product Details

Blade Length 3.5

Overall Length 8.25

Closed Length 4.75

Weight (oz) 3.7

Source Previously owned

Additional Specs

Knife Type Tip Up Clip, Tip Up Carry, Reversible Clip

Blade Material M390

Blade Details Drop Point

Handle Material Metallic, Carbon Fiber

Other Details Prototype

About the Maker

Heretic Knives
Heretic Knives

"All of our knives are made in the USA and we will keep it that way. When you purchase one of our knives you can have confidence in your tool knowing that it is backed by an American company. Our knives are made in small production runs to ensure you receive a quality knife that has been given the attention other mass produced knives don't receive. In 2015 my wife Jessica and I founded Heretic Knives. As a second generation knife maker, applying the knowledge that has been passed to me, I want to bring designs and certain elements to the craft that haven't been tried before. In closing, I look forward to passing the same knowledge, plus what I've picked up on my own, down to the next generation."

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