Parlor rifle that uses BB caps or Floberts. That actually looks like a nice gun, even without the engraving. I, too, thought it might be ambidextrous but it has a distinct sculpting for a right hand thumb rest, as seen in one of the pictures. You can still find ammo for these from RWS, etc. My guess it will go far north of the current $300 bid. The rear sight, alone, is worth that.