You have a Weimar period police, S. Me. 11 R. 677 means Schutzpolizie Merseburg division 2 weapon #677, not luger #677 in the division but weapon #677, R was reserve unit and X'ed out when it was no longer a reserve unit, also was weapon #56, crossed out and went on to become weapon #677, script on mid toggle is DWM, maker, 1920 is in this case year produced, but to be sure we need letter suffex, the ID number is a serial #, and should have a letter suffex, we need that to sure. We need a few pictures to give a value estimate, condition is everything, most likly in the $500/1000 range, does it have matching mags, should have a sear safety and perhaps a mag safety, most likly removed...get some pictures up and we'll have a better go at it....