Subway Tokens  Introduced in 1953, the New York City subway token was simple solution to a problem engineers couldn’t solve—creating a turnstile that would accept two different coins for the fifteen-cent fare. (For 44 years, the subway cost a nickel, then for five years, a dime.) The iconic coin—most famously remembered with a large cut-out “Y” in the letters “NYC”—lasted for fifty years until they were finally discontinued in 2003 and replaced by the far more efficient (and lightweight)…