Hi Ben ! I hope You understand that I will not translate the whole text but the most interesting parts of it.

The seller is obviously a german soldier that has been in Afghanistan and found the gun there on a market. There is no stamp telling the caliber on that gun but a company that knows how to do it said it is a .500 Black Powder Express 3" with slightly oversized chambers. Black powder rifling, good condition, few rust pittings inside and outside, not much blueing left, the extractor is stuck and cannot be moved, scars from the firing pins on the extractor, screws damaged, the forend stock is not original and most propably from a russian shotgun, the action closes like a safe, the engraving shows a tiger (left side)and a lion (right side) with rust pits on his head, stock is partially broken at the wrist area, another damage where the stock meets the action, the checkering is almost gone.

I hope that tells You something about this treasure !

Kalunga