Roman Coin ,Set in a Frame of 18 Kt Gold, Made By Hand to Fit the Exact Size of the Coin. The Coin is in copper, and Belong to the Emperor Constantine The Great. OBVERSE : CONSTANTINVS AVG, laureate head right. REVERSE : PROVIDENTIAE AVGG, two-turreted gateway of military camp, star above. Mint: Struck at the mint of Rome. Pendant Size: 2 cms x 2 cms = 0.96 inches x 0.96 inches without the link.