Egypt, Alexandria. Commodus 177-192. Tetradrachm (Billon, 27.00 mm, 11.22 g). Dated RY 23 = 182/3. M AYPH KOMMO ANTωNINOC CЄ Laureate bust right. Rev. YΠATOC TO Δ Zeus seated left, holding Nike on globe and leaning on sceptre; LK-Γ (date) in exergue. Emmett 2566. RPC IV.4.3406.46 (this specimen cited). Dattari-Savio 3898. BMC 1396. SNG Copenhagen 568. Very rare. Very Fine. Ex Roma Numismatics Ltd. with LAC, Auction IV, 30 September 2012, lot 708. During Commodus' reign, with a few rare exceptions, the tetradrachms lost all silver content and appear to have been minted in bronze or copper. However, this rare specimen is positively highlighted both by its good conservation and by the original crystalline black patina, where the images stand out from the light sandy deposits in the background. On the reverse, in addition to the majestic enthroned Roman Zeus, the indication of the emperor's fourth consulship (= 183 AD) stands out in the legend.