I will post Pix of the interior tomorrow. There isn't much to see, all the mechanics are inside a metal box inside the machine. There is nothing anywhere on the machine to identify the manufacturer or the model number. No serial number, no labels, no nothin'. Also there is no candle, no buzzers, no bells and no lights or alarms go off when there is a winner. I'm wonder if this might be a prototype. I do know it's a Parker from a photo a friend sent me. Apparently Parker went out of business in 1973. They were based in Las Vegas. I Feel I'm not too far from getting this up to working 100% but I need a repair manual the find out what relay/coil does what.