Thanks for taking time to respond. I know it's old. Suspected 1960's. I only asked for model so if I came across maybe a wiring diagram or some type of operators/ service manual. I said 4000# capacity because located on the mast is a large sticker that says 4000# when looking forward from the seat. It does have the swing doors with oval cutouts. Giving this information what make of engine did Baker use? Let's say it's 1950's to early 60's. Did they use only one engine? It appears to be 12volt. Thanks