Pan-American Railway Post Office/Buffalo, N.Y./Sep. 2, 1901. Large cds with numeral "1" duplex cancel (Bomar B01-03) tying 1¢ Pan-Am on card to Binghamton, N.Y. with Expo. label in green affixed, reverse with perfect 2nd strike of the Expo. Railway Post Office marking & Binghamton arrival, Very Fine and attractive. Estimate  $300 - 400. $0 (Image)