Your basic 8BA 6v generator. It's white because the stainless cover still has the scratch protector on it. The 2 bolts at 6 oclock and 12 hold it together. Remove the 2 bolts and gently pry the end plate off of the generator body. Careful the end plate is aluminum and after 50 years it can be stuck pretty good. You can snap off a piece if you get too rough with it. Unlike a pocket watch, no springs and gears will fly across the room when you open it up. No diodes or transistors, just brushes that any idiot with a screwdriver and a wrench can change. This is the generator body with the field windings inside. This is all you need from a 56-64 Ford 12V generator to convert a 6V unit to 12V unit. The copper segmented section of the armature is called the commutator. That is the part that the brushes ride on. You can see some arcing in there after dark and the carbon brushes will make it look dirty. A few seconds with some Scotch Brite or 400 sand paper will clean it up nicely.