Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Portugal

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Start price: $400

Buyer's premium:

1962, 50th Anniversary of Portuguese Scouts, 50c multicolored, imperforate single with inverted black color, no gum as issued, NH, VF and very rare, reportedly only 35 produced, two reference articles included, Est. $800- $1,000, Scott #886 var