233 NGC Ch VF Julia Mamaea Egypt Tetradrachm Alexandria Sarapis Rare (25020403C)

Choice Very Fine Roman Egypt tetradrachm coin. Struck for Empress Julia Mamaea at the Alexandria Mint. Julia Mamaea was a Syrian noble woman and member of the Severan dynasty. She was the mother of Roman Emperor Severus Alexander and remained one of his chief advisors throughout his reign. She was killed in 235 by rebel soldiers alongside her son. Dated to Severus Alexander's 13th regnal year given by Greek letters I Γ = 13 = 233/234 CE. Emmett 3226/13, rated as R4 (extremely rare), 12.95g. NGC Certified to Ch VF. Pedigree: Ex. CNA (precursor to CNG) VIII (Sept 1989), Lot 276. Coin has fully silvered surfaces, very rare as such. Obverse: draped head of Julia Mamaea facing right with legends in Greek.  Reverse: Egyptian god Sarapis seated left on throne, on back of throne Nike holding wreath, Kerberos seated at left, left hand holding scepter, right hand extended, date letters LI Γ (= 13) in left field. Serapis or Sarapis is a Graeco-Egyptian God. The cult of Serapis was created during