Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 664:
1944, 3rd Anniversary of Independence, imperforate trial color proofs of 3.50+1.50k, 12.50+6.50k and 18+9k, three for each denomination, all with top right corner sheet margin, full OG, NH (hinged on margin far away from the stamps, VF and scarce unit from the Ministerial Album, ex-Euro-Yu, Est. $200-$250, Scott #B6-62
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