4th-5th century AD . Circular, just over ½” diameter with stipple border (halo or wreath?) and crisp Chi Rho cipher. The Chi-Rho symbol was used by the Roman Emperor Constantine I (r. 306–337 AD) as part of a military standard (vexillum). It derives from the Greek word Christos. Professionally refurbished with a 24karat gold overlay on an 18” gilt sterling silver neck chain for modern wear, with a certification of authenticity and is jewelry gift boxed.
