"Jesus Christ Victorious" Gold Cufflinks

Solid 14K yellow Gold Cufflinks of a Byzantine coin (Konstantinato).  In polished relief are a cross surrounded by Byzantine letters.  Two acronyms for the Greek word  Jesus (upper left corner) and Christ (upper right corner) and the Greek word Victorious in the lower half ( ΙησουC ΧριστοC NIKA).  The back side of the coin depicts the Emperor Constantine the Great (311-337 AD) who became Saint Constantine alongside his mother Saint Helen (who discovered the Holy Cross).