Pan-American Exposition. Blue embossed cameo corner card on 5¢ Postal entire in matching blue, additionally franked with 5¢ Bureau Issue tied by "Buffalo, N.Y." duplex cancel and addressed to Cuba, numerous markings & backstamps including "Dead Letter Office Return to Writer" Pointing Hand & Dead Letter Office double circle backstamp, cameo is the early version showing the copyright line, Very Fine and unusual. Estimate  $100 - 150. $0 (Image)