Picked up the knife in the photo below at a local garage sale yesterday. From what I have gathered from research it is an early USN MK2. The knife is blade marked only with "USN" and "Ka-Bar Olean, NY" on the reverse side. The leather scabbard is also USN marked and is stamped Boyt 1943.

Can anyone tell me the approximate manufacture date of the knife? Does this happen to be the rare, straight line variation?

The only matching knife that I have been able to locate photos of after researching is in the link below.

Early KABAR USN Mk2, blade marked - U.S. Militaria Forum

Here are some pics...













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