Since 1963, CDN has been the pre-eminent authority on wholesale pricing for United States coins and currency. As a full-service media company dedicated to numismatics and collectibles, we provide printed data services, digital media and printed media to the trade in the form of pricing, auction results, news, and structured data. House brands include our flagship Greysheet, Greensheet, Banknote Book and CPG prices. CDN is completely independent and objective in our pricing models.