One of the rarest known postage stamps, and consequently one of the most prized by collectors, is the ten-cent stamp issued at Nashville in 1861 by Postmaster McNish, and bearing his name.

Gross’ stockpile of over 100 postage stamps contains several ultra-rare items — including multiple stamps worth more than $1 ... via a trade with the 11-year-old son of Mystic Stamp Company ...

Here’s a look at some of the 12 most valuable American stamps that are still out there, waiting to be discovered by lucky ...

Traditional mail is still the biggest money ... to the Postal Service governors asking them to delay any additional stamp price increases until the recent increases' effects on mail volume and revenue ...