The chips are on the much newer hub mold. More than likely after 1949.
We did an IOTD on them.

Here is a small part of the IOTD posted on 11/8/10. Good story and articles. The address on the die tag is probably where Chan lived. I've found if you ask 3 different Chinese speaking people you will get 3 different answers on what the Char says.
I have a 3ed die tag for Gene Chan on Commerical in SF that I suspect is the same Chan as B and M Chan.

And now “The Rest Of The Story.”
Huge gambling operation and convicted for trading with the enemy (China). Paid San Mateo county officials $15,000 per month in bribes to operate. The gambling houses had guards deputized by the San Mateo sheriff. Operated under dummy corporations and illegal tax maneuvers.
The Palms Casino entrance was in San Francisco County. Limo’s would deliver the players to the front door. They walked through the club into a back room that was in San Mateo County and protected by the payoff’s.

Sam and Harold Nason had this same idea of straddling county lines in Clermont/Hamilton counties, Ohio back in 1937. They were going to use an double wide mobile home but never did put it into use.

Translation: From Mr S.
Left: Wui - remit (or possibly "good for")
Right: Yun - source (of luck or wealth)
Confirmed:
B Chan= Bok Hing Chan
The Palms, Goat Ranch and Cabbage Patch.
SW corner of Waverly & Washington
Downtown Chinatown San Francisco.
1940’s-50’s