Penny Black: 'First' piece of mail sent using a stamp could fetch

If the piece realizes its estimate, Sotheby’s said it would become one of the most valuable pieces of postal history to have ever been auctioned.

A €4 million piece of paper: Why the world's first postal stamp is worth it

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Mail Adventures (MailAdventures@) / X

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How Much is a Penny Black Stamp? The History of the Penny Black – Penny Black Advisers

PPT - most expensive stamps PowerPoint Presentation, free download - ID:126019

Лот в 2,5 млн долларов. Первое письмо с маркой выставляется на аукционе / ИА REX

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The penny post is delivered

Why do we need stamps? - Quora

Mahira appeals to govt to 'continue to provide safety to Afghan brothers and sisters in need