Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2
Lot 644:
1915, King George V, four plate proofs of 2c, 3c, 6c and 8c in black, engraved printing, horizontal imperforated pairs on wove paper or on paper with inverted NZ and Star watermark (8c), no gum as produced, NH, VF, Est. $300-$400, Sc. # 146/56
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