Further to John's post on this topic, these certificates clearly have an expiration date which is 4/30/99. Also each one has a hand-written number in the upper left corner. For the number-crunchers out there, the one on my certificate was #56 which was packaged with Big Sable serial #483. On the back of the certificate is the statement "Prize selection to be determined by Harbour Lights". Wonder which one it will be?