This 1-Cent Z Grill from 1868 is one of the rarest U.S. postage stamps in history Robert A. Siegel Auction Galleries A 1-cent postage stamp from 1868 is up for auction and could fetch up to $5 ...

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 ...

The recent sale of a 1-cent Ben Franklin stamp for $4.4 million, the most expensive U.S. stamp ever sold, again raises for consideration the question, “Are postage stamps good investments?” ...

Several stamps are expected to hammer down for more than $1 million, with the rarest being one of two known one-cent “Z” Grill stamps from 1868. If sold for its estimate of $4 to $5 million ...

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 than) a pretty penny. On June 14, the one-cent Z ...

America’s most valuable postage stamp sold for nearly $4.4 million on Friday. The 1868 one-cent "Z" Grill was sold as part of the collection owned by "Bond King" Bill Gross, who co-founded asset ...