Auction 90, Session 1 - Worldwide Rare Stamps and Postal History
Lot 579:
1922, Provisional violet overprint ”Baku” over inverted black re-valuating surcharge 50,000r on 3000r brown and blue, Baku postal cancellation, still fresh and VF, used stamp is a rarity, several experts’ guarantees on reverse, SC #26, C.v. $1,500 for an unused, not priced in used condition, which is mistake, because the only used stamp can be considered as legitimate one, Est. $750-$1,000
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