15. Navajo Ute first phase blanket – $350,000 to $500,000 (U.S. series, 2004)
When your family owns an item that was originally gifted to them by American frontiersman Kit Carson, it’s a safe bet that it’s worth a hefty sum. In this case, it was a Navajo blanket, which was valued between $350,000 and $500,000. Once it was actually auctioned, though, it fetched $1.8 million.
14. Alexander Calder mobile – $400,000 to $1 million (U.S. series, 2010)
American sculptor Alexander Calder is famously credited with inventing the mobile. So, if you have one that he made, chances are that it’s probably worth something. A mobile that Calder had given someone in exchange for a needle-point pillow appeared on Roadshow in 2010. And despite having been restored slightly in 1986, the appraiser still valued it at between $400,000 and $600,000, before going on to suggest that it might even fetch $1 million.