I picked up several chips this weekend - most of them I could identify but not these.

The O.O. Club has 25 Cents on the reverse. The JCT is the same on both sides. The RITZ is the same on both sides - Armin lists red and blue "L" mold chips from the Ritz Club in Oroville, CA - could this be the missing white chip?

The seller said the three chips with the Chinese characters were from Marysville, CA. There has been a large Chinese community in Marysville since the Gold Rush days but who knows?