Professional Coin Grading Service (PCGS) is a rare coin grading and authentication service founded in 1985. The intent of its seven founding dealers, including the firm's president David Hall, was to standardize grading. The firm has divisions in Europe and Asia, and is owned is owned by parent company Collectors Universe. PCGS cofounder Silvano DiGenova was the lone creator of PCGS's grading standards via his assemblage of its grading set of coins, which are still in use and "widely accepted".