History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 385:
1857, HRH Prince Albert, trial color proof of 6p in red purple, vertical imperforated pair with inscription at right printed on India paper and mounted on card, no gum as issued, VF, Unitrade #2TCi, C.v. CAD$650, Est. $150-$300 , Sc. #2
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