Unknown markings on AKM-bayo..

[Egorka]

I could throw in here that the blade design is a shameless rip off of the ingenious Eickhorn KCB-70 bayonet, that's where your sawback comes from. Eickhorn also held a patent for the wire cutter design that fits into the slot in the blade.

Hello,
But if I trust the following link, the rip off happened the other way around.
http://worldbayonets.com/Library/Art...70_article.pdf

The intent was to produce a multipurpose bayonet-knife, with a wire-cutter similar to the Soviet AKM bayonet. The KCB-70 blade is patterned after the Soviet AKM bayonet, featuring a clip-point with saw back and wire- cutter features.

The AKM bayonet prototype (Navy version) was designed and produced in 1955-1956.

[Bruno]

..the rip off happened the other way around..

..sure you are right