The Smith and Wesson factory. You will have to request a S&W letter for more information
Can't be answered without a DETAILED descripiton of ALL markings.
You will have to call S&W
1912
1871
2006
1911
1910
what model, caliber. ????????
Caliber should be on the barrel. SN's were not required until 1968
Early 1930s
What model .38?
No such S&W model number.