Probably an easy one. I know it's a later build in .300 Savage. SN 5741xx. The lever boss has what almost looks like "24B". Awfully difficult to make out well, though, except for the B. Checkered stock and steel buttplate. "Should" be all original as the guy I got it from had no interest in modifying his firearms. I'd like to know manufacture timeframe and letter designation, just to satisfy my own curiosity. This gun's a great shooter!