Legend has it that one must have a special key to enter the mythical world of Margaritaville. Is this that key? No. But it sounded fun, so what the hey. We really don’t know what this vintage sheet iron key was used for, though it was most likely a locksmith’s trade sign. The 21 cut out of the top adds to the handmade character of this fun piece. Who knows, it could lead you on a quest to find that lost shaker of salt. 20th century.