Preliminary identification
Photo reference
1 uploaded photo
Overview
This is an authentic U.S. Navy MK 3 Mod 0 dive and utility knife, complete with its original molded plastic scabbard. Engineered for elite maritime forces, it features a distinctive black oxide-coated clip-point blade with a serrated spine and a textured, high-impact plastic handle marked 'USN'.
Story
In the 1980s, Navy SEALs and divers needed a tool that could survive the corrosive depths of the ocean. This rugged knife was engineered specifically to meet those brutal underwater demands. It became a trusted icon of elite maritime operations.
Maker / Origin
While several military contractors produced the MK 3 Mod 0, the Ontario Knife Company (OKC) is one of the most prominent manufacturers associated with this pattern. Founded in 1889 in Naples, New York, OKC has a legendary history of supplying robust, no-nonsense bladed tools to the United States Armed Forces through multiple major global conflicts.
Condition & Value
The knife and sheath appear to be in very good, lightly used condition. There is minor wear to the black oxide coating on the blade's high points, and the synthetic straps and hardware show light age but remain fully intact. Excellent preservation of the blade edge and tip keeps this on the higher end of standard utility value.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Build on this identification
Layer in sold comps, value drivers, and venue guidance.
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.