I wanted to share this image with you all--and to ask a couple of questions. I got this at a gun show today and I am thinking of putting it up for sale on eBay. Does this thing have a name? Is it a coin? A token? Can you use the word "Screw" on eBay? On the reverse it says, "Good For All Night". Anybody heard of Slim's Palace in San Francisco? Any idea of the date of such a piece (no pun intended)? It is a fairly thin piece of metal. Do any of you collector's have an idea of a fair price? Thanks. Doug