Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 425:
1859, Jacques Cartier, top margin imperforate trial color proof of 17c in black, printed on India paper, fresh and VF; in addition trial color proof of 17c in green, printed on India and mounted on foreign card with minor facial yellowing at top, first one has Unitrade #19TCi, C.v. CAD $750, the other one listed in Minuse and Pratt #19TC1 a with C.v. $100, which is very high for such proofs, Est. $250-$300, Scott #19
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