Doug Saito has California chips in his Chip Chat auctions from time to time.
He may have some insight into Holy Grail chips for you.
(You probably have his email, but if not, check with me or with Todd Barrett.)

See the 5c and 10c Normandie Club chips here --
http://chipguide.themogh.org/cg_chip2.php?id=CAGANC&v=1709197224

They are well-liked and hard to find.