[HIGHLIGHTS] Piano, costumes, paintings...Elton John's private collection up for auction at Christie's

Piano, costumes, paintings...Elton John's private collection up for auction at Christie's. Estimated for the tidy sum of $10 million, part of singer Elton John’s private collection is preparing to be auctioned.

The famous auction house Christie's is responsible for the inventory and the sale. The artist owns photos of Andy Warhol, Helmut Newton, works by Keith Haring and the most expensive piece, a triptych signed Banksy, estimated at one and a half million dollars.