~~~ regarding variations in rim/ring width/placement that can determine value differences and, most known variations having the same central graphic with slight variations carry different codes and, that is just one other reason to study Dale Seymour's ANTIQUE GAMBLING CHIPS Revised Edition...

My bound covers have worn away...


AND SOMETIMES THERE IS NO VALUE NOTED DUE TO THE RARETY OF SO FEW KNOWN REGARDING MARKET VALUE BEING UNKNON -- WHICH MIGHT NOT BE THE SAME TODAY
FOR MORE COMMON CHIPS ALONG WITN SOME LESS COMMON CHIPS....

...and, there has been a lot more variations found after publication...