Corner card Buffalo Specialty Mfg. Co. w/ red rectangular area in UR corner, a 1¢ Pan-American commem vertically placed & tied by triangular Expo machine cancel, Trenton, NJ receiver on back, light foxing; bonus: 1958 Brussels Expo souv cvr w/ #1104 tied by US Pavilion cancel (Image)

Est. $60-80 SE

Valuable Accum of abt (876) Expo PPC from 1898 Trans-Mississippi to 1915 Panama-Pacific & a few later; all sleeved, all mailed, sorted by Expo in (2) cover boxes, majority are IDed by Bomar number; incl (9) Trans-Miss official postal cards, (11) Pan-American official PMC; (261) St Louis w/ large variety of card types, regular & fair cancels and use of commems; (80) Lewis & Clark, (268) Jamestown, (132) Alaska-Yukon & (101) Panama-Pacific various cities; a few 1930s as well; large amt of Expo station cancels as well as machine promo slogan cancels, use of relevant commem stamps; primarily domestic addresses, great selection w/ some dup, gen F-VF

Est. $800-1,000 L