This plain mold chip belongs to a friend who lived in Missoula and dealt poker at the Ox. She said that this chip was in play in the early 1980s, and for all she knows, they might still be using these chips. I would guess that these chips were in use way before the early 80s. TGT indicates that this establishment was opened in the 1880's.
If anyone has any information on this chip, it would be greatly appreciated.
Best Regards,
Murph