General Delivery/Sep 28/Exposition Station/St. Louis, Mo. Bold violet four line Expo. handstamp (Bomar STL04-09) on postcard franked with 1902 1¢ Regular Issue tied by Iowa duplex cancel & addressed to "Bungalow, World's Fair Grounds" & readdressed to "General Delivery", Very Fine, a very rare & undervalued marking used on incoming mail held for pickup at the Exposition Post Office. Estimate  $500 - 750. $0 (Image)