Pictured below are 4 chips --all I have-- of the 4th chain mold that I know of. I don't know if it is shown in any chip book. (The red chip is PWF (?) on one side; 5.00 on the reverse. The orange one is PWF/1.00. And the BPOE-Elk one has 000 on the reverse (I guess it was a sample chip).) All the chips have 16 squared links. The green chip was given to me by an executive from the old Hunt Co. That chip, interestingly, is made of a somewhat different composition material than the others. All seem clay composition, but the green one makes more of a "thud" sound when it bounces off a table.......Incidentally, it is possible this mold was used for non-protected/non-club, home game uses.

Robert