Just a rule of thumb, but Ed's site does not have all the different chips from the clubs listed on his Illegal listings. I have many chips not on his list, but are real. A example that all Newport collectors know is the Lookout Club green 5.00 chip that has the Lighthouse with the word club on it. I have other examples of chips without values on them.

Could it be a fake? Possible, but unlikely. Could it have been cleaned up? Maybe.