Nice find Von!!! I am a Wa. chip collector from Seattle.The "PSC" stands for "PIKE STREET CLUB" It was called the "PIKE" for short.My mom used to take me there when I was a chid. I would get my shoes shined and watch the adults play pool and cards. It was located in the center of downtown Seattle and was very popular as was the place across the street called "BEN PARIS".The chip is showen in "Steve Goodrichs" book of WA. state casino chips