C.A.V. Type EC6. Series 54C. N° 629. Large magneto for 6 cylinder English cars. Turns, but both bakelite caps missing. Suitable for spares or building up. Clockwise rotation. Used on e.g. Crossley cars.
Broken down. Not working. Could bake a working engine from the 2. Found in grandfathers / uncles garage along with large amount of other de Dion parts..