Andy Warhol work in 'Dollar Art' London auction

A private collection of 21 works of art inspired by the US dollar, including some by Andy Warhol, is to be auctioned by Sotheby's London.

Sotheby's Contemporary Art Specialist James Sevier said that "money is one of the prevailing themes of Warhol's work". 'One Dollar Bill (Silver Certificate)' from 1962 is among the Warhol works expected to sell for millions in the July auction.