These coils came with some Model T parts I bought and I am sure some one would like them if I could identify them. The small one is about 2x2x4 with switch for batt or mag. The brass tag says NEW ERA master coil New Era spring and specialty co. The large one is for a 2 cyl. engine and the tag says The Auto Coil Co.
Small one is one of the many brands of aftermarket accessory master vibrators offered to work with multi-cylinder coilboxes, Model T Fords being one application. The Autocoil box was intended for a 2 cylinder engine probably industrial or marine as automotive usually had removable coils.