Imperial M4 bayonet with wooden checkered handle

[lboos]

Nice find gun papa.
I found this Imperial M 4 trench knife at a gun show Fri. been looking for awhile. the M3 trench knives have really went up in price the last two or three years.
I wanted it for my small collection of carbine knives.

1st pic.: Imperial M 3 blade marked, with M8 scabbard.

2nd pic.:
M3 trench knife with M8 scabbard.
M 4 bayonet with M8A1 scabbard.
M4 bayonet with M8A1 scabbard, [bayonet is the Korea / Vietnam era]

Anyone ever noticed that on the very tip of these knives their is a dark spot ? I think it caused by the hole at the tip of the scabbard ? or it could be to my poor vision ?

Information

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[browningautorifle]

on the very tip of these knives their is a dark spot

It's not a general thing, looks like that one may have been poking a fire. Discoloration on the whole blade. It also could have been stuck in a barn beam for some years.