James M. Scott examines a denarius minted in Rome in 55 bce which is visually fascinating but conceptually enigmatic. On its obverse, around the head of a female figure with turreted crown, appears the name A. Plautius, who held the office of aedilis curulis in that year; on its reverse is a camel, in front of which a male figure kneels on his right leg, holding the camel's reins in his left hand and extending a branch in his right hand; the legend...