1901 Pan-American Ex, Encased Coin Token, aluminum disc with 1901 Indian Head penny in center. Obverse: design of 4-leaf clover with "GOOD LUCK SOUVENIR/PAN-AMERICAN EXPOSITION/BUFFALO, N.Y.". Reverse: 2 opposite facing horseshoes encircling the penny with "LUCKY PENNY"/I'M IT/POCKET PIECE". The penny was already in the aluminum disc before the designs were crimped in, because the 4-leaf clover design continues into the penny's rim (Image)

$40