$300.00 would be reasonable if it is a Champ or Super II. These are the latest versions of the 670. I would be hard put to pay that much for the earlier version with the two piece ign unless it was really mint. You can't always identify these saws by the stickers as covers get changed or the serial tag may be missing. Quickest way to tell early from late is the location of the front, top cover bolt on the left hand side. If the top cover bolt is forward of the upper left hand recoil cover bolt it is the early version....if it's aft of the recoil cover bolt it is the late version. All good saws and dependable just the latest versions were more refined and a bit easier to work on.