The "48" is a tube fed .22; not much by way of collecter value, so if the bore is ok, restoring won't hurt it. I saw that one went on GB recently for $100 in pretty decent shape; here's the link for info purposes:
Looking at it again, I think this might actually be the 43 DL; possible that the auction link was as well, but hard to tell from the pic. Lots of references for the 43. It is a Marlin 81 made for Sears.