Gordian III, AE29 of Kalchedon, Bithynia. M ANT GORDIANOC AVG, laureate, draped, cuirassed bust right. KALCADONIWN, serpent-entwined tripod. Unpublished for Gordian III in all known works. This reverse known for e.g. Tranquillina: Mionnet Supp. V, 169; RecGen 117; BMC 37: Lindgren I 108. VF. Price $80. By permission of ancientcoinart.com, March 2002.