What is the error referred to in this auction? The fact that the inlay design is off center? I call that bad craftsmanship, not an error. Am I missing something here? Should I be wishing that my ZZ Top chip was screwed up too ?

http://cgi.ebay.com/ERROR-ZZ-TOP-HARD-ROCK-LAS-VEGAS-5-CASINO-CHIP-RARE_W0QQitemZ160086201961QQihZ006QQcategoryZ63752QQssPageNameZWDVWQQrdZ1QQcmdZViewItem