An ultra-rare U.S. postage stamp is going under the hammer this summer — and it may fetch as much as $5 million. Robert A. Siegel Auction Galleries in New York recently announced that it will be ...

UNDATED (CNN Newsource/WKRC) - The rarest stamp known to still exist in the United States is set to go to auction and is currently expected to sell for millions of dollars. It's the 1868 One-Cent ...

(CNN) — Here’s something for serious stamp collectors only. This summer, philatelists will have a chance to snag the rarest US stamp ever: the 1868 one-cent “Z-grill.” Interested? It’ll cost you (more ...

In June, New York’s Robert A. Siegel Auction Galleries will offer what it is billing as the most valuable U.S. postage stamp, an extraordinarily rare 1868 one-cent “Z-grill” stamp featuring Benjamin ...

A one-cent postage stamp from 1868 is expected to become the most expensive U.S. stamp ever sold when it heads to auction in June. Known as the “Z-grill,” the stamp is the most-valued piece of what ...

Get your stamp book ready for the ultimate addition. This summer, Robert A. Siegel Auction Galleries is offering the William H. Gross Collection of United States Stamps. The organization is ...

PIMCO founder and investor Bill Gross — best known as the "Bond King" for his role in the bond market — collected $4.4 million at an auction for a rare stamp. What Happened: Gross, who has been shying ...

This past March it was announced that a Naples resident was selling a lucrative stamp collection owned by William H. Gross. The collection recently sold at auction for a total of $19,201,550. A single ...

IN A multimillion-dollar swap, a California collector traded a block of four 1918 stamps bearing the image of an upside-down plane Wednesday for an equally rare 1868 one-cent stamp. The blockbuster ...