Have been trying to get a view able photo of the proof marks,alas, my camera sucks.....it is not nitro proofed, from what i have been able to find, made between 1887/1894, mark "not for ball" in German, the is a letter with a star over it,which seems to be a inspectors mark,one barrel marked 16.2,the other is marked 16.8. There is a 4 digit serial number, and three letters in a pear shaped circle,.. hope that helps,the photos just are blurry. I don't think these are demaskis (sic?) barrels, more a pattern on them. The pattern does not go under the fore-stock. Black powder, so where/who could i possibly get rounds/shells? i have heard people still shoot these old ones......