Oscar Heyman Brothers diamond bracelet, circa 1958.

Diamond bracelet by Oscar Heyman Brothers. Set with three marquise shape panels, each centrally set with a marquise shape brilliant cut diamond in an open back claw setting, all three with a combined weight of 0.75 carats, each flanked by two horizontally set drop shape brilliant cut diamonds, in open back claw settings, all six with a combined weight of 1.50 carats, further flanked by eight tapered baguette cut diamonds in open back half rubover settings, all twenty four with a combined weight of 1.50 carats, surrounded by fourteen round brilliant cut diamonds in open back grain and claw settings, all forty two with a combined weight of 1.40 carats, all set between sixty square step cut diamonds in open back corner claw settings with a combined weight of 7.20 carats. The total approximate diamond weight is 12.35 carats, to an elegant articulated two row form with intricate openwork throughout, conforming and flowing smoothly to the wrist, to a secure clip fitting. Marked platinum, maker's mark for Oscar Heyman, numbered '81132', circa 1958, accompanied by certificate of authenticity from Oscar Heyman.