Your model 37 was mfg. in 1972.
It sounds to me that you have a Ithaca Flues model double barrel shotgun.With the serial number that you provided,your shotgun was made by Ithaca in 1917.
The age of an Ithaca can easily be determined from the serial number. What is it?
The serial number indicates your gun was manufactured in 1949.
1000.00
11169
1950
1938-39
1949
1947
The Ithaca side by side 12 gauge serial 188650 was made in 1927.
Go to diamondgunsmithing on the internet and enter your serial number. That will do it.
The Ithaca Model 37 shotgun with a serial number of 349302 was manufactured in 1953. Ithaca's serial number records indicate that this model was produced in that year, making it a vintage firearm. The patent number 1849982 is related to the design features of the shotgun.