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Lot 428

1899 1a bright blue overprinted On S S S with error, overprint inverted. Not listed in SG and possibly unique. Catalog value as normal stamp £425. Top left corner missing. 2025 ISES certificate.

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Condition Symbols:

11 = Mint Never Hinged 1 = Mint Hinged NGAI = No gum as issued (1) = No gum 3 = Used