The winning bidder sold me a few for my buddie's
BCC Capones set.
They are definitely HHR
clay chips.
Just like you'd get from ASM back in the day or
CPC now.
Langworthy did make clay chips according to Robert Eisenstadt's chip mold site: they made the Rectangles mold, tri-clubs mold, HHR mold, maybe more. Well he doesn't confirm these are clay, but I have all these molds in my possession and they are clay.
http://www.antiquegamblingchips.com/molddesignindex_site.htm