I'm keeping an open mind... and I don't want to jump to conclusions, but here is what I think is
pretty substantial evidence.

The chip has the full name... "THE NINETY CLUB" stamped on it. I could not find another "The Ninety Club" Night Club with this same name.

Lots of Gay 90's but no "The Ninety Club". Other mentions of The 90 Club, or "The Ninety Club" seem to be a club for people who are 90
years of age.

The hot stamp is decorative and over-designed, this is a stamp made to be celebrated. A lot of the advertising for the club also has
over the top decorative fonts. Smky Mold time period works too...

Newspapers claim roulette table found during raids... the non-denomination chip fits a roulette.

They had games for years there in EL Cerrito... If you find me a different club called "The Ninety Club" anywhere that was a nightclub I'd say you
may have a point and I'll re-think... but I think this is the old, "looks like a dog", situation. Besides... doesn't it look like a CA chip