The same year you shot your gradma you freak
Your serial number indicates that your Ithaca shotgun was made in the year 1920.
Call Ithaca at 1 877 648 4222 and they will tell you.
1976
The Ithaca Model 37R with serial number 505739-4 was manufactured in 1970. The serial numbers for Ithaca shotguns can help determine their production year, and the range corresponding to this serial number indicates its date of manufacture.
1975
1924
By the serial #
Impossible to answer without the serial number
1976 is the year
The Ithaca side by side 12 gauge serial 188650 was made in 1927.
You would need to include the model number or name of your Ithaca firearm,along with the serial number to get the correct answer.
You need to provide the serial number.