I just realized one of my Wal-Mart Marlin 336s (with the gold trigger, but JM-marked) is worth at least $700 more than what I paid for it in the early '80s. (But sadly, given the rate of inflation, it's probably about the same amount in 2022 dollars.)
No, but they're better than the early Remington produced Marlins (RemLins). Can't speak to the Ruger-produced Marlins.
I do know that I've several nice S&W revolvers produced in the '80s and '90s that I probably picked up for between $129 - $450 used between about 2004 and the present -- that I know I could easily sell for anywhere from $900 to $1400. Model 19s, 66s, 27s, 28s are all commanding premium prices. Even Model 36s, 37s, 60s are getting obscene prices. And let's not even talk about any of the S&W or Colt revolvers in .22LR. I bought a Colt Police Positive from the early 1930s for around $200 a few years back -- it's in 98% condition, easy -- and the Blue Book on it is $850.
Clearly, older revolvers are commanding premiums.