Crispina. Tetradrachm; Crispina; Alexandria, Egypt, Year 21 = 180/1 AD, Billon Tetradrachm, 9.96g. Dattari/Savio-pl. 213, 3971. Obv: KPEICΠEINA - CEBACTH Bust draped r. Rx: [L]K - A across field, Spes advancing l., holding flower and raising skirt. Ex Peter Lowrek Collection; ex Lanz 155, 10 Dec. 2012, lot 581. Crispina is a very rare empress at this mint. Three of her six known tetradrachm types were R5 (unique) in 2001 according to Emmett.. VF