I posted this a couple of weeks ago--won the chip; you suggested Moline, Ill. TCR says "T" mold & this is "dots." There was a "The Plantation" at Hammond, Ind. Could that be it?

http://www.ebay.com/itm/Antique-Bone-Poker-Chip-The-Plantation-5-00-/321766205267?pt=LH_DefaultDomain_0&hash=item4aeac2a753