950. Seleuceia ad Calycadnum. Severus Alexander. 222-235 AD. Æ 29mm (13.36 gm). Radiate and cuirassed bust right; countermarks: Æ and K / Athena standing right, holding shield and wielding spear against serpent-legged giant hurling stones. SNG Levante 756. Nice VF, light green over darker brown patina. ($150) CNG Mail bid sale #58, 18 Sept 2001, lot 950. Lot sold for $190. Used by permission of CNG, www.historicalcoins.com