April 19 (Bloomberg) -- Nick Walker, an old spray-mate of fellow British street artist Banksy, sold 750,000 pounds ($1.5 million) of paintings and prints this week at the start of his first one-man show in the U.K., the gallery said yesterday.
All but two of 60 original Walker works on offer, many featuring his anarchical alter ego, ``The Bowler-Hatted Vandal,'' found ...