Lot
820 
1901 Pan-American Exposition, all-over illustrated expo ad design on cover bearing 1¢ deep green (279), tiny flaw, tied by "Buffalo, N.Y. 'D' 1899" machine cancel (B01-16) with "1901 Pan-American Exposition" involute flag to Westfield Mass., Very Fine and scarce involute. Estimate $200 - 300.
Realized: $260