posted 02-03-2014 11:05 AM               

Space memorabilia of a more traditional nature — autographs, medallions, and stamped rocket-flown envelopes, known as covers — abound on the market, and the best examples command strong prices. But the things that helped the astronauts reach the moon and come home safely are what hold special power for collectors and are the artifacts that climb into the six-figure realm at auction...