The C.J. Sisk is from a defunct Paul-son subsidiary company that made chips for the California market into the 1980's.

Note the old logo on the two green chips in the top row. I believe these are 20+ years old.

Mark Corso was a Paul-son salesman. The other side of his business card is red (split layer chip).

Prices are as marked. You can pay with cash-funded PayPal or by check or cash. I'll pay postage.