I meant the USN Mk 1. Can you link a citation for the Mk 1 being issued with both left and right hand leather sheaths?That left- and right-hand reference (and all the mfgrs) was for the USN Mark 1, not the 225Q. I'm sorry if I gave the wrong impresssion. As far as I know the 225Q sheaths were (1) all leather and (2) all left-handed. Even Gen. Cota's in the photo is a lefty, but moved over to the right side.