GENTLEMAN'S 12K YELLOW GOLD AND COBALT COLOR ENAMEL SIGNET-TYPE RINGlate 19th-early 20th century Flat circular mount with cobalt enamel and letters "U.A." above belt motif and clasped hands; shoulders of shank each set with old mine cut diamond weighing approximately .15 ct. Ring size: 11. Gross wt: 7 dwt. $500-700