if I recall correctly, this chip was part of junket trip Jerry had back in the 70's. a pan am plane was chartered to leave New York or Miami (?) late PM Friday night. Destination was Bonaire, Puerto Rico or some other island.. Travelers will put up $500 in exchange of playing chips and the Hade chip. You will play all night long until you loose the money, stop, quit, etc. Next morning, the Hade chip was like your boarding ticket to the plane for the return trip back home. I might be wrong, but I think this is what it was.