Sotheby's To Auction Rare Stamp That Last Sold For $9.5 Million

Sotheby's To Auction Rare Stamp That Last Sold For $9.5 Million

NPR

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A stamp called British Guiana 1c magenta is expected to fetch around $15 million. The so-called Mona Lisa of the stamp world will be auctioned at Sotheby's on Tuesday.

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