The ring that Kelley wore was a woman’s. It was won in a card game shortly after World War I by De’s uncle. He gave to his sister. When she died decades later, it was the only possession of hers that De wanted. When Gene Roddenberry hired De to play, Dr. McCoy, De insisted that “you can’t have me if I can’t have my ring,” and Roddenberry relented. What’s interesting is that in nuTrek, Karl Urban wore his Starfleet Academy ring on the pinky finger of his left hand, in tribute to Deforest Kelly.