Gene; I know that Bob Mera uncovered quite a few of these chips prior to his unfortunate and premature death ... and others have been located since then ... and I am under the impression that the family still has an unknown quantity that they may or may not be let go.

My question I guess, was more to the point of those chips that are currently available to the collecting community.... which is what determines value ... not necessarily how many were manufactured. We also don't know how many may have been destroyed ... if any.