British Guiana 1c Magenta

$8.3 million

Most valuable stamp sold at auction

Confirmed Auctions and treasures · Verified 2026-10-31 · WWV-MB-002

The only known British Guiana 1c Magenta stamp sold at Sotheby's in June 2021 for $8.3 million. It measures about 3 by 2.5 cm and dates to 1856.

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