History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 399:
1859-64, Queen Victoria, imperforated plate proof of 12½c yellow green with vertical overprint Specimen in carmine, printed on India paper, no gum as issued, VF, Unitrade #18Pi, C.v. CAD $300, Est. $100-$150 , Sc. #18
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