Heuer Game Master

HEUER Game-Master wrist-chronograph, manual winding, Switzerland around 1960, chrome- plated case with snap on stainless steel case back, bidirectional revolving bezel with 60-minutes graduation lockable by winding crown at 3, cream colored dial with 60- seconds-/-minutes-graduation, minutes- and seconds-counter from middle, nickel plated movement, calibre 7710, 7 jewels, diameter approx. 54 mm, stop function has to be repaired, needs to be overhauled, condition 2, property of a collector