Ruben Olivares autographed Boxing Greats cachet 1993 Joe Louis stamp First Day Cover

1993 Joe Louis stamp First Day Cover with Boxing Greats cachet autographed in blue ballpoint pen by legendary Mexican bantamweight and featherweight champion Ruben Olivares (he added his nickname El Puas to his signature). With certificate of authenticity from AutographsForSale.com. ONLY 2 AVAILABLE FOR SALE.