SS. Primus and Felician, whose saints' day is the 9th of June, were brothers and Roman citizens who had been raised as pagans, but were converted to Christianity. They were later martyred for their beliefs and their bodies are now in the church of S. Stefano Rotondo in Rome. A lobed rock crystal sweetmeat box with almost identical mounts was lot 1051 in the Thurn und Taxis sale, Sotheby's, 12 October 1993 (4830DM).