The Romans were not the greatest of sailors, preferring to hug the coasts of the Mediterranean rather than crossing the open seas. I can't say I blame them either. Considering there were no weather satellites, no GPS, no flotation vests, no emergency beacons, and no helicopter to come pull you out of the water in the event of a tragedy, I'd be terrified too if I was a Roman sailor and had to cross the Mediterranean sea in a fragile transport vessel laden with heavy cargo. Which is why I found this Roman Republic denarius rather amusing. It features the Dioscuri brothers, but in the form of Janus. The Dioscuri brothers, featured prominently in the story of Jason and the Argonauts, were considered the patron figures of Roman sailors, and so it would not have been out of place to find an altar to the Dioscuri brothers aboard a Roman ship. But even more interesting is that they are depicted back to back, as a two-faced deity which is the form often associated with the god Janus, who was seen as responsible for the safe completion of journeys. In essence what you have here is talisman for nervous Roman sailors, depicting both of their patron figures in the guise of the god of safe ends to journeys. I can imagine when this denarius came out, every superstitious Roman sailor went out of his way to make sure he had this denarius on his coin pouch or around his neck prior to departure. C. Fonteius, Rome, 114-113 BC. AR Denarius (20mm, 3.93g, 5h). Laureate, janiform heads of the Dioscuri; I to l. R/ Galley l. with three rowers, gubernator at stern. Crawford 290/1; RBW 1120; RSC Fonteia 1. If I was the gubernator (captain) aboard this ship, I'd be nervous too if my crew was comprised of three tiny rowers and a ship so tiny it looks like some sort of fancy decorated bathtub. I can see why he would want the Dioscuri looking out in both directions to try to spot trouble before it becomes serious. Post anything relevant.