World's first stamp 'Penny Black' unveiled in Hong Kong(1/2)

Sotheby's presented the world's first postage stamp, the "Penny Black," to the public, Hong Kong, Oct. 26, 2021. The stamp will be as part of a sale of "Treasures" on Dec. 7 in London. (Photo: China News Service/Chen Yongnuo)

Sotheby's presented the world's first postage stamp, the "Penny Black," to the public, Hong Kong, Oct. 26, 2021. The stamp will be as part of a sale of "Treasures" on Dec. 7 in London. (Photo: China News Service/Chen Yongnuo)