7.62x39 "10 78"

I assume it is a Bulgarian round. The drab lacquer is largely gone. This round was in a bag with a lot of loose 7.62x45’s, so is lacquer gone because of rubbing action or it is natural for lacquer to fall off with age?


Depends much on where it came from.
To me it looks like a round that was often loaded and unloaded from a magazine (wearing off the coating on the even area of the case body) and then at some point was subject to corrosion and later got cleaned up a bit.

Something not unusual in tin can republics.

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The bullet profile looks like a tracer to me so I’d say the green tip has worn away too.