British graffiti artist Banksy has been steadily capturing the USA with his month-long New York "residency" leading to predicted sales of millions at Sotheby's. Now seven older pieces by the elusive Bristol spray painter are set to go under the hammer in California - with estimated bids of around $150,000 USD per piece. "Banksy manages to remain remarkably anonymous, while causing controversy or mayhem,' said Julien's Auction rep Caroline Galloway. "We expect to see a lot of interest in these works." The 'Street Art Auction' will take place on Thursday, June 26th, 2014 in Beverly Hills. The Banksy's up for grabs are: "Mariachi Player" (Est: $100,000-$150,000), "Anarchy Rat" (Est: $50,000-$70,000), "Rapper Rat" ($30,000-$50,000), "Gangsta Rat" (Est: $20,000-$30,000) and "Bomb Hugger" (Est: $2,000-$3,000) "Mortar Rats" (Est. $40,000-$60,000) and "Kids With Guns" (Est. $80,000-$120,000). Pictured: 'Scarlet Heart' (Est: $20,000-$25,000), a mixed media work by renowned street artist Retna.