Donald Campbell interest. An enamelled silver St Christopher plaque, designed to be mounted on a dashboard, given by by Donald Campbell to his secretary Kathleen Marie Barry, French maker's mark for JC or JO with maple? leaf in between, 3.25 x 5.75cm. CONDITION: Marks to the metal around the two holes on either end. Numerous tiny scratches to the blue and grey enamel. Scratches and a chip to the black enamel. Grey panels towards the holes are chippe also. Some scratches en verso. Maker's mark JC or JO with maple leaf? in the centre.