1881: 5 st. black & yellow, used example with yellow 'Background Inverted' variety, a superb example of excellent centering and colour, neatly cancelled by star in circle obliterator in black, showing the variety clearly. An extremely rare stamp in consummate condition for this rarity. Signed Karaivanoff. Cert. Karaivanoff (1957) Scott 7a = $ 2'400/Gi. 11a = £ 1'800/Mi = EUR 3'000.
Corinphila Auctions Ltd.
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