A six-volt 'Klaxon' manufactured horn.
Internally it appears to be in almost unused condition. It has been resprayed in gloss black.
As it is 6 volt it has not been tested.
Its age is unknown, but is probably pre-1939.
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..