I think maybe Royal might have put their name on someone else's saw. Peter I see old Rockwell/Beaver/Delta saws similar to that one come up fairly regular and they were pretty good saws. People are usually asking from $100-200 for them. They had a decent fence on them. A buddy of mine wanted to upgrade from his to something newer and bigger and sold it to me for $100. I use it as a backup saw to my Unisaw and there isn't much it will do that the old Rockwell can't. Besides what Nick said make sure that the frame that holds the motor isn't damaged. Someone was on the forum a few years ago that had a broken one and he was having problems finding a replacement. The one thing they didn't have going for them was the very short distance from the blade to the end of the top. They benefit greatly from an outfeed table, even if it's only a foot wide.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.