Maybe the wrong place but I have a casino related question - I have an old chip tray off of a blackjack table. It is cast aluminum. I was trying to figure out who manufactured it. The only mark on the bottom is a vertical oval with two stacked "S"s in it. The S are stacked on top of each other. Does anyone happen to know the name of the gaming equipment manufacturer? I figured its probably worth keeping if I can figure it out, otherwise into the recycle bin it goes.