That early seated dime is terrific catch, congrats. I like seeing a find like this, one where you have a pretty good idea of when the coin was originally lost. Since the cabin site was not on the 1864 map, one might presume the coin was less than 27 years old (1864-1837) when it was lost. If that's the case, your dime got a lot of use (and wear) in a short amount of time!