History of Aviation, Rare Stamps and Postal History of the World, Part 2
Lot 569:
1915-19, King George V, four plate proofs of ½p in green, 2p and two of 3p in black, horizontal imperforated pairs printed on thin chalky ungummed cards or on gummed watermarked NZ and Star paper (one of 3p), NH and VF, Est. $300-$400 , Sc. #144, 163 64
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