History of Aviation, Rare Stamps and Postal History of the World, Part 3
Lot 1368:
1920, 2hr-200hr, 15 imperforated blocks of four or ten (one 100hr) on white paper, some printed on both sides or with offset on reverse, many with white back, occasional paper wrinkles, mainly fresh, no gum as produced, NH, VF, Est. $200-$300, Bulat #V28/40
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