Eight Elvises
... that Andy Warhol's Eight Elvises, which sold for $100 million, has not been seen in public since the 1960s and its location is currently unknown?
... that <a href="./Andy_Warhol" id="mwCfU" rel="mw:WikiLink" title="Andy Warhol">Andy Warhol</a>'s <i id="mwCfY"><b id="mwCfc"><a href="./Eight_Elvises" id="mwCfg" rel="mw:WikiLink" title="Eight Elvises">Eight Elvises</a></b></i>, which <a href="./List_of_most_expensive_paintings" id="mwCfk" rel="mw:WikiLink" title="List of most expensive paintings">sold for $100 million</a>, has not been seen in public since the 1960s and its location is currently unknown?