Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 340:
Description
1859, Queen Victoria, two imperforate trial color proofs of 12½c in black, first one with vertical overprint SPECIMEN in carmine (type A) at left, printed on India paper, no gum as issued, VF and scarce, Unitrade #18TCx,ix, C.v. CAD $1,300, Est. $400-$500, Scott #18
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