Although I didn't research it, I suspected Hemenway and Moser were chip distributors. It is interesting that many cigar stores were also chip distributors. I suspect many ran card games in the back room.

Unfortunately I can't use your information until I can attach a location with the chip. Now if Hemenway had a "1939" in its address that would solve the mystery

I'm still hoping that there was a 1939 club in Nevada.