Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Portugal - Revenue stamps

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Start price: $150

Buyer's premium:

INDUSTRIAL TAX TRIANGLE STAMPS 1894-: 1901, 2r-400r, altogether 311 stamps in singles, pairs and blocks of 6, 8, 24, 28 and 40, neatly arranged on stockpages by years and denominations, usual mixed condition, most is in collectible quality, F/VF, Est. $250-$300