Page 247 of Dale's book shows a plain Carlo chip, but is coded PC-CG and it is called Carlo club. I think the wrong chip is displayed in the book, or maybe he didn't have the right chip but knew it was available. The 2012 online version has the chip on page 16, coded correctly and shows what he thinks the chip looks like. Says simulated. You have the right chip in my opinion. Appears to be quite rare, at least today. Lucky you.

I also think the Geometeric on the first line is a variation of PD-DF