Do you have a favorite U.S. stamp?

The Smithsonian's National Postal Museum is creating a new 12,000-square-foot gallery to be named in  honor of William H. Gross, the founder of PIMCO and a stamp collector, who has donated $8 million for the gallery.

The new gallery, which will give the museum public space at the street level, is expected to open in 2012.

In addition to the financial donation, Gross will loan three extraordinary philatelic objects: A cover from the Pony Express service; a cover featuring the 10-cent George Washington stamp, dated July 2, 1847; and a block of four 1918 “Inverted Jennys.”

The gallery will include an international collection of stamps, and you have an opportunity to help choose which stamp will represent the U.S. in the the gallery. Click on this link to see the stamps that are under consideration, read about each stamp and cast your vote.

Other donations have been made to the development of the gallery. Click here to read more about the gallery and those who are making it possible.