Platinum, Sapphire and Diamond Pin, Oscar Heyman & Brothers, Retailed by Gumbiner

Platinum, Sapphire and Diamond Pin, Oscar Heyman & Brothers, Retailed by Gumbiner
The looped bow accented by 10 round and 14 square-cut sapphires approximately 2.50 cts., set with 24 round diamonds approximately 1.00 ct., with maker's mark for Oscar Heyman & Brothers, no. 48637, signed Gumbiner, approximately 5.7 dwts. With box signed Gumbiner.

C The James P. and Joan M. Warburg Collection