"25-100 USD" This answer is wrong and the person who answered it is a moron!
If it is in nice condition it is worth at the least $250, the moron who answered this first had no idea what he was talking about. This is not a pawn shop special piece of sh!t throw away bar gun. Hang on to it, it's worth passing down to future generations.
Sauer, Schmidt, Rohm
10-100 USD or so
It is a Montana Marshal
50-260
$250 - $300.00 US dollars depending on the condition.
No sn data available.
25-125 USD
No published sn data I know of
No known sn data published.
Could be Sauer, Schmidt, Rohm, RG, Gecado, or any of a dozen others.
No data published. Firm is in Suhl, Germany.
These range in price from 200-295 dollars,depending on overall condition and a good bore.