Bidspirit auction | United States

United States - 1971, Bicentennial of the American Revolution, 8c multicolored, vertical pair, top stamp has missing gray color completely and black color partially (only two splashes remained) due to a piece of extraneous paper falling into the plate during printing, full OG, NH, VF and rare, APEX and PSE certificates, C.v. $650, Est. $300-$400, Sc. #1432b