I have a Stevens Marksman 12 Rimfire 22LR break action rifle.
It's my understanding they were made from 1911 thru 1930, so while I don't have an exact date, it's likely that it's nearer the start of production, given that my father in law would have got the gun in his early teens.
I have a Marlin Model 57 Levermatic in .22 mag I bought a few years ago. I'm thinking it's from the 50's or 60's. I can't find a serial number on the barrel, nor have I removed the stock to see if there's a number on the barrel or receiver. Haven't checked to see if the receiver is steel or aluminum. Haven't done anything with it.
Sometime in the past someone ceracoated the receiver and barrel and refinished (poorly) the stock. I'd love to have the stock refinished and the barrel and receiver re-blued. That would be after I made sure it functions as it should.