1975
Manufactured in 1905
You vave an Ithaca sxs Flues model made in 1911
The serial number indicates Ithaca manufactured your Model 37 in 1956.
It was made in 1973
1950
1902
(1949) - 202951 thru 302500
The serial number indicates your gun was manufactured in 1949.
The serial number indicates your Model 37 was manufactured in late 1969.
The serial number indicates your gun was manufactured in 1966.
There's a list of serial numbers by year at http://ithacagunrepair.com/page5/page23/
1926. sales@countrygunsmith.net