The first is a M1917 trench knife. I purchased it off e-bay several years back and it was much better than described. Scabbard is marked Jewel 1918 and the blade is in excellent condition. Tip is a little loose on the scabbard.
Next is a M1918 Mk I. I purchased this one while in a military leadership course for a whopping $20! The person said he was going to polish it out and use it for hunting!!
This one is a carbine bayonet I purchased a long time ago in a pawn shop.
Last one was from an estate sale in central Florida. It is a home made knife with phillipines 1945 etched into the blade. The handle is a copper pipe with a piece of wood inside hammered flat on the tang of the blade.
