that one in the auction, looks to be made between either 38 to 41, or then 45 to 53. dl's were not made until 38, then no marlins were made during war years, then they were made again after war , until 53, with no warning, no serial number, and not saying ' microgroove' on the bbl. the accuracy on these is quite stunning, they also shoot Aguila colibri' super colibri's, short, long, and long rifle, that is an origional peeep site on the back, and is proly made before hi velocity 22 lr ammo. so it proly only works with standard velocity ammo, which is more accurate anyway. also , it will really shine shooting cci short, hi velocity hollow points. the peep site alone, on an auction, is worth 50 bucks and up.
that one in the pic, is well worth the money.