There was only (1) one Horeshoe Club in Gardena. Located on Rosecrans Avenue, it is currently a strip mall. If it was ever called a casino, it would have been during the last years of operation. In any case, there was only one club. Being a low-stake player, I never remember seeing a $500 chip but that doen't mean they did not have one.
In addition to the other Horseshoe clubs/casino listed in Travis's message, there was also a Horseshoe club in Clovis, Ca., outside of Fresno.( I do have access to the only $5.00 chips left from there if anyone wants them.)