The prestigious auction house Sotheby's held its first ever sale of hip-hop memorabilia tonight in New York, featuring items such as a one-of-a-kind Def Jam jacket and a DJ triptych by Fab 5 Freddy. One noteworthy object on sale was a plastic crown once worn by the Notorious B.I.G. Originally purchased for $6 at a novelty store, the crown fetched $594,750 at auction.