The Gaming Table (5th Ed.) list two different "In Trade" hub mold chips. It does not identify the font of either chip. Both shipped to Montana.

One was shipped to the Oxford Cigar Store, 337 N. Higgins Avenue, Missoula, Montana, likely sold in 1937. (Not sure if this one has a denomination on the back.)

The other listing is for "In Trade/ denomination" was sold to The Turf, Missoula, Montana, likely in 1947. I'm guessing the two listings refer to the same place.

There is probably a Mason order card for your chip, and if you submitted it to the ChipGuide, there is a good chance the card might be uploaded there at some point in the future.