My wife gave me this for my B-day on the 1st, then I left for a trip on the 2nd so I haven't had time to investigate exactly what it is I am now the proud owner of. Other than knowings it's a Leica screw mount, I have know idea what this is. I did find a place to look up the serial # but it was in German and I have no clue what it said. It gave me 2 options to search and one came back with a date of 1935, the other 1937. Anyone have a good resource where I can find more info on this camera?