I have "United Keen Ball" Pinball machine Manufactured by United Game Co. (Lincoln, NE & Des Moines, IA). The Pine ball machine is all wood and it looks like it could be from the 1920's. It has "12 Balls 5 c" on it, directions for play and notes about nonresposbility of gambling by the lessor. Legs are missing, but otherwise in fair condition. Does anyone know what the value of this could be or any additional information of the machine. Thanks.......