Worldwide Air Post Stamps and Postal History - Argentina
Worldwide Air Post Stamps and Postal History - Argentina
1950, Air Post Semi-Postal stamps, International Philatelic Exhibition, 10+10c - 5+5p, complete set of six imperforate trial color proofs in blocks of four, printed on thick wove paper, no gum as issued, NH, VF, Est. $300-$400, Scott #CB1-5, B12
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Worldwide Air Post Stamps and Postal History - Argentina
1950, Air Post Semi-Postal stamps, International Philatelic Exhibition, 10+10c - 5+5p, complete set of six imperforate trial color proofs in blocks of four, printed on thick wove paper, no gum as issued, NH, VF, Est. $300-$400, Scott #CB1-5, B12
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Time, Location
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