Bulova chronograph from 1970s. We believe that this watch was manufactured by Heuer Leonidas for Bulova. The micro-rotor movement is the same as Heuer Skipper or Carrera with cal. 15 . The case back was signed Heuer Leonidas which was crossed and the BULOVA name engraved above. Number 1163 engraved between the lugs at 6 o’clock. Number 7512 engraved on the back. Serviced in March 2008. LOT#2S5