You know, the subway once ran on a 2‑cent token that was minted in Philadelphia and stamped with the word SUBWAY and the old MTA “M” symbol; it was a small silver coin that let you literally carry a slice of the city in your pocket. That design stayed in use for about sixty years until the 1960s when they switched to a 25‑cent copper token with a new face design, signaling a new era of fare payment. Those old tokens are now collector’s items, but I’ve never seen one in a modern farebox, so if you find one in a thrift shop you’ve got a little piece of transit history, though the MTA probably would have printed it again if it were still in use.