Help - need ID on this one - maybe Bulgarian?

[markbritt]

Just picked up this luger the other day. What caught my eye was the lack of a stock lug and lanyard loop. It was full of grease and needed a good cleaning. First thing I noticed is a small machined area under the safety. If you look close, you can see what appears to be an "O" and possibly a "b"? The barrel, slide and frame and most of the other parts are matching. The trigger plate, extractor and firing pin are not. The slide has an #82 stamped underneath it. I took it apart and it looks like it has been reblued - but the fine edges are not worn down and look sharp. The toggle train is all matching with #82 stamped on all 3 pieces.

Couple of questions:

The grips are solid and well done - could these be original?

Could this be a Bulgarian? If so, can the machined area be restored or is it best to leave as is?

Since it appears to be reblued, were the trigger, safety lever, mag release, etc strawed?

What would be the approximate worth?

Any idea of the year of manufacture?

Any help you can shed on this would be sincerely appreciated.

Thanks,
Mark