History of Aviation, Rare Stamps and Postal History of the World, Part 3

Uruguay

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Start price: $75

Buyer's premium:

1889, red trial overprint ”Provisorio” on 5c violet, and inverted green trial surcharge 5c on 7c bister brown, unused, no gum, the last one with slight reversal toning, otherwise VF, Est. $120-$150 , Sc. #73, 101