So I've had my Model 24 22 WMR / .410 since 1965 (kind of) my Grandfather purchased it for me the day I was born and then I shot it for the first time when I was 5, at least that's what I have been told.

My question is

After a lot of research to identify my gun I read that there should be a circle with numbers and letters to identify model, year of mfg. My dilemma is, the only markings similar is the circle on the left side next to trigger but it only has 3 numbers and no letters.

i also read somewhere else that identification numbers are also sometimes under the butt plate. I haven't fired the gun in in close to 40 years and it is in what I call almost near new condition. My grandfather got me a .20 ga when I was 10 and then I joined the USMC when 17 and it was in a closet at my moms house until last year.

any help with model # will be appreciated. I'm hoping that the .22 mag/ .410 may be able to track at least something or there was a year that they only put numbers in the circle.

TIA