 At AmFed Coin & Bullion, Nick's been in the industry over 42 years, and he's proud of providing transparency and fair pricing to build long-term relationships. If you're interested in buying or selling, call AmFed Coin & Bullion for a free coin performance review. 800-221-7694. AmericanFederal.com. AmericanFederal.com. You said you'd never buy your kid candy from the checkout aisle. Or forget extra diapers.