A set of three Crest & Seal chips being purported to be from Puerto Rico is not accurate as the seller claims. These mistaken identity chips being offered are actually from Progressive Realty Corp... St. Lous, MO
Check out this ebay link, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140543012664 then go to Rich Hanover's excellent reference resource site for the correct attribution.