Space-flown Sacagawea dollar coins fetch over 500K at auction

The 22-karat gold coins flew aboard the Space Shuttle Columbia in 1999. Breakthroughs, discoveries, and DIY tips sent every weekday. Seven $1 coin s that once traveled to space sold today in an online auction. The sale prices ranged from $120,000 up to $550,000. Officially designated as 2000-W Sacagawea dollars, the coins were struck in 22-karat gold in the late 1990s. Since then, they sat in storage at the Fort Knox Bullion Depository.