The Smithsonian Institution's National Postal Museum is asking for help in selecting an iconic stamp to represent the United States in an international gallery — and one of its choices celebrates the first moon landing.

You can vote on which stamp best represents America; choices include the Statue of Liberty, the capitol dome or a flag-and-fireworks stamp. One of the seven candidate stamps is the classic $2.40 Apollo 11 single.

The stamp that receives the most votes by January 20, 2011, will be the winner.

Stars and Stripes on the lunar surface

The moon-landing priority mail stamp was unveiled back in 1989, during ceremonies marking the 20th anniversary of Apollo 11's July 1969 moon landing. [Apollo 11 Anniversary: A Look Back in Pictures]

The dedication ceremony — with Neil Armstrong, Buzz Aldrin and Michael Collins in attendance — was held in conjunction with gala anniversary celebrations at the National Air and Space Museum in Washington, D.C.

The stamp features two astronauts planting the Stars and Stripes on the lunar surface. The designer of the stamp was Christopher Calle of Ridgefield, Conn. Calle is the son of Paul Calle, the veteran illustrator who produced the first moon-landing tribute stamp, a 10-cent airmail stamp issued on Sept. 9, 1969.

Like the work his father created for the 1969 stamp, Christopher Calle's original mixed media design was based on NASA photographs of astronauts practicing moonwalking duties preflight.

The U.S. Postal Service issued its first Priority Mail stamp on July 20, 1989, partly to promote speedy mail delivery, but also to celebrate the Apollo 11 expedition to the moon.