Bidspirit auction | British North America - Newfoundland

British North America - Newfoundland - 1865, Harp Seal, imperforated plate proof of 5c in yellow brown, printed on India and mounted on card, top right corner sheet margin block of ten (2x5), ABN inscription at right selvage, fresh and VF, Unitrade #25Pi, CAD$900, Est. $300-$400 , Sc. #25