If you're the kind of company that does business promotional stuff, you know coasters with Fred's Plumbing on and the like you can buy in SAKs like that for the purpose of printing/engraving.Most of the second hand ones you see are ex.advertising ones that have had their advertising removed. You can almost always tell on close examination though. If you hold them at the right angle to the light you tend to see a really faint ghost of the original text.Neil