Severus Alexander, AE29 Pentassarion of Istros, Thrace. Obv: AV T K M AVR CEB ALEXANDROC, laureate, draped, cuirassed bust right. Rev: ISTRIHNWN, Tyche standing left, holding rudder and cornucopiae. E in right field (value mark). Varbanov 669. Courtesy of La Galerie Numismatic, Auction IV, 2004, lot 352. Added Jan. 2010.