This stove has a burner with clips to hold the flame spreader instead of the usual ring. I don't know how old it is, but I'm assuming it's older than the usual 45, perhaps a very early production model for it's type. Who knows. It works wonderfully (after a ton of work!) I think this stove looks best with it's original patina and the next owner can polish it if they desire, but as long as I own it, it will wear it's age with dignity.