Mid Century JE Caldwell Platinum Diamond Band

Mid-Century J.E. Caldwell platinum diamond band. The prong style cluster features 9 round, and 8 marquise cut diamonds, that weigh approximately 85/100 carat total.
The is a size 3 ¼, weighs 4.2 dwts, and is stamped J.E.C & Co. PT
Circa 1950s