Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 809:
1898, Mt. Cook ½p and Kiwi 6p, two engraved imperforated plate proofs in black, horizontal pairs printed on wove paper without watermark, no gum as produced, NH, VF, Est. $150-$200 , Sc. #70, 78
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