"Everything in this wing is genuine old fake," Stahl told the two tourists while his wife clung proudly to his arm. Like him, she was tall, blonde and impossibly good-looking. "Even this strongbox money is finest American counterfeit," she said. "May I see it?" asked Smith. The lifeless face of the mathematician brightened as he peered through the quartz top at a dollar bill marked W8265286A. "I can only get the worthless real stuff. Ancient governments always destroyed counterfeits. But you're