Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 247:
Description
1931, Third issue, die proofs of 1c-30c in issued colors, complete set of 11 printed on watermarked paper, vertical proofs have size 33-44×39-46mm, horizontal – 41 -57×32- 42mm, perfect quality, no gum as produced, NH, VF and very rare in complete set, NSSC 162dp-72dp, C.v. US $5,500, Est. $3,000-$3,500, Scott #172-82
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