Numismatica Ars Classica, Auction 74, Lot 298 ROMAN COINS THE ROMAN REPUBLIK AES GRAVE ANONYMOUS. Sextans, Rome 265-242 BC Æ 39.81 g. Obv. Tortoise on raised disc, seen from above. Rev. Wheel of six spokes. Literature BMC Italy 54, 14 Crawford 24/7 Sydenham 63 E.J. Haeberlin, Aes Grave, Frankfurt, 1910, pl. 25, 16. B. Thomas & E. Kesteloot, Tortues du Mondes, Les éditions du Perron, ...