 Complete the following phrase:  On 24 June 1999 Clapton sold the guitar through Christies Auction House in New York City to help raise funds for his alcohol and drug treatment center, Crossroads Centre. Brownie sold for US497,500 becoming the most expensive guitar ever sold at the time only to be eclipsed by Claptons other favourite guitar Blackie on 24 June 2004. Brownie can now be seen by the public at the Experience Music Project in Seattle, Washington under the ownership of Paul Allen. In 2006, another Stratocaster, signed by a large group of celebrities, including Clapton, was auctioned to benefit the victims of the 