Pharrell's auction house sold a 'holy grail' watch collection for over $1 million. These are the 5 priciest pieces

Joopiter, an auction house founded by Pharrell Williams, held a watch auction in July. Alexander Tamargo/Getty Images for Richard Mille Pharrell Williams' auction house sold $1 million worth of rare and collectible watches in July. The collection featured watches from brands like Rolex, Cartier,…