Nice little rifle.
I have a Marlin model 25 that I wish I could get back into shooting condition. It was my first gun, given to me by my father when I was 13.
Unfortunately, it has a worn sear that makes it unsafe. (the rifle sometimes fires as soon as the bolt is closed.)
Thus the reason for the introduction of the 25N which had an improved bolt/sear design that fixed the issue.
Those micro-groove rifled Marlin rimfires are tack drivers