Lot of 3 rings 18 kt white gold. 1. Signet ring without a hallmark, inscribed "Yvette ˆ Jean" dated 1949, set with a +/- 0.20 ct brilliant. Ring size 47 2. Signet ring without a hallmark, set with a +/- 0.20 ct brilliant. Ring size 59 3. Tank ring (hallmark 750) set with four 8/8 diamonds. Ring size 67. Weight : 19,7 g