An upcoming auction in New York will be providing a one-of-its-kind opportunity for fans of space travel. More than 300 unique items from different space missions will be up for grabs.

Auction house Bonhams is organizing its Space History sale on April 8. Items that will be in the auction include memorabilia from the Apollo 11 mission of Neil Armstrong, Buzz Aldrin and Michael Collins and other artifacts signed by or used by crews of Apollo 11 to 15 missions.

It is the emblem worn by Collins aboard the Apollo 11 mission and signed by all the three crew members to get the highest bids. The emblem, which is just six inches square, is expected to appraise at $40,000-60,000.

Critical flight items, genuine spacesuits, lunar-flown American flags, rare photographs and astronauts' personal effects are some other items that will up for sale. It can be said that the auction has items from entire range of space history. One of the important items is Buzz Aldrin's checklist that he prepared when he was on the Moon.

The checklist contained Aldrin's notes that comprised data that were important to get the Apollo 11 crew back to Earth. Bonhams said one of the other exciting piece that will be on auction is a spacesuit from the United States' first manned flight program called Project Mercury.

The project was carried out between 1959 and 1963. "In addition to the iconic Project Mercury suit, Bonhams will offer a Russian Strizh spacesuit, designed to protect cosmonauts from ejection at altitudes up to 30 kilometers and speeds up to Mach 3", adds Bonhams.

Many American flags will also be sold off. These flags are considered to be quite special as they are part of small collection that has gone to the moon and back.