Lubrication Centre", Valvoline, Motorcraft "Parts Service", Singer Service "Rootes Products", Saab, Duckhams, Austin & British Leyland and one other (both illuminated). (12)" /> A collection of motoring advertising signs including Pirelli, Stepney Tyres (reproduction), Texaco, Duckhams "<I>Lubrication Centre</I>", Valvoline, Motorcraft "<I>Parts Service</I>", Singer Service "<I>Rootes Products</I>", Saab, Duckhams, Austin & British Leyland and one other (<I>both illuminated</I>). (12) | Christie's