what model is this?
Proofhouse.com has Colt sn data.
1968. That year began with SN 2030404. 1969 began with SN 2172336.
year 1959
The year that the Savage model 99 250-300 with a SN of 337166 was made was 1941.
Your Glenfield was made in the year 1974.
You will have to call S&W with the sn to find out.
No published sn data.
http://armscollectors.com/sn/windates.htm The year of manufacture for serial number 3937694 is 1974.
Made in 1934.
it was made in 1954
Made in 1961.