Ed, I believe the Top of the vine chips were made from scratch. If I remember correctly, The top of the vine owner had an interest in the manufacturing company that produced the Vine chips.

Mel Jung knows the whole story as he was a rep for the company.

Just as a side note, if you need any of the others in the series, I have the $0.50¢, both $1.00 versions, $1.50, $2.50, $3.50 $4.00 and $5.00 chips. No $25.00 chips (even in my collection.)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=899&item=748038344

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=899&item=748034434

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=899&item=748032578