Maybe I'm no Columbo, but this scenario is the best I can come up with. The great harmony group the Crew Cuts of the 50s put on a reunion concert in San Francisco and sold this T shirt. Front says "Crew Cuts" and "sf." Frankly, I have no idea what the story is behind this shirt, but if you like the Crewcuts (or if you have one) then maybe this is for you! Manufactured by Oneita. 100% Cotton. SIZE: Large. Nearly new condition.