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A British Guiana One-Cent Magenta postage stamp from 1856, the only one of its kind to still exist, could sell for a record price when it is auctioned on Tuesday evening at Sotheby’s, where it is expected to fetch as much as $20 million. If it reaches such a hefty price in the one-lot sale, the one-inch by one-and-a-quarter-inches stamp (2.5 cm by 3.2 cm) printed in black on magenta paper will be the most valuable object by weight and size, according to the auction house.

“World’s Rarest Stamp Could Fetch Record Auction Price Of $20 Mln” is categorized as “business”. This video was licensed from Grab Networks. For additional video content, click the “video” tab at the top of this page.

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