this blog post about the International Lao Market that's there now asking about the sign, and a response in the comments. Go to the post to read the whole thing, but it sounds like it was quite the place once upon a time:
The club was kind of hidden between buildings and not too many people knew about it. I never let anyone know where I was getting my tickets on game day because they only had a limited supply. I think Ben Davidson or Jim Otto (or both) had something invested in the club and I saw some Raiders having a beer there more than once. Got to build up those carbs for the game, heh heh.