Dating firearms by seral number
This date code is different than the one already listed, as Marlin rimfire rifles (other than the model 39 series) did not have a serial numbers until required to by Law after 1968. serial # 191797** there are no other markings on the rifle Also reading these posts, there are no markings on, near, around, or underneath the lever I would assume the date code would be the but it doesn't fit with what others have posted.subtract 19 from 100 = 81 so 1981. The Glenfield model is the same as any regular Marlin 336 but was made for a chain store, used hard wood instead of Walnut and may have had different sights.The first letter of the date code represented the month of manufacture while the second letter indicated the year. The workings are exactly the same as any other Marlin.This date code was usually stamped on the left side of the barrel just in front of the receiver. Frankm there is a two letter code for month and year on 22's from 60-68 I do not know if it was on any other years, scroll down at the link below and you will find the list.
I know it was made in 1970 and I have read that the Glenfield name indicates it was made for a chain or mass-merchandise store.
Remington Premier Once Fired Hulls 12 Gauge Popular shotshell for reloading.
Remington Firearms Serial Numbers Decoding the serial number.
Serial numbers were not a requirement until 1968, so older firearms may not have serial numbers.
You can still use the two-letter code on the barrel of the rifle or shotgun to look up the firearm's age.