Hi hunter50,
your gun was made around 1909 to 1912 approximately. It isn’t possible to give an exact date, as there are existing only records starting at SN 200,001 which was made in 1914. Your gun is a Sauer model I, by the way.
As far as the current value is concerned: well, it was one of the cheap models when it was made. In fact, it was the cheapest shotgun Sauer offered at that time. See a scan from Sauer’s 1906 catalog.
As the condition of your shotgun isn’t the best I’d rate the value between 300 and 500 $ approximately.
Regards
Martin