Block of the world’s oldest stamps go up for auction, expected to fetch up to $7.5 million

(CNN) – A block of the world’s second official postage stamp is going up for auction in May. It is expected to fetch millions ...
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World’s 2nd oldest stamps to be auctioned

A block of the world's second official postage stamp is going up for auction in May, and is expected to fetch millions of ...

A block of the rare stamps is set to be auctioned

Block of the world's second postage stamp goes up for auction in May; expected to fetch up to $7.5M.