Here are three chips I bought on eBay recently to get the red ones I needed. These are attributed to the old days of gambling in Cuba. As far as I know, there are only these three blue chips plus the red ones with the same designs. I've seen no "club" designs, although TGT mentions them.

The Gaming Table lists these as Unknown; the fellow in Florida who sold them said Sans Souci. TGT also lists a Hub mold GC as Sans Souci so possibly that's where he got his idea. TGT does say for the Hub mold "Owner: Gene Castro". "GC"??

Still nice old crest and seals. The darker areas on the Heart chip are wher the clear overlay is bubbling up a bit... doesn't appear stained on the chip.

Your choice for $25, delivered.