this is one sharp group
the cap is from a 1930 Minerva Cabriolet built in Antwerp, Belgium by a company started by a Dutchman as Jaap pointed out
here is the car in all its glory
97210556.z05sW2VP.jpg
Charles S. Rolls, of Rolls Royce fame, got his start in automobiles selling Minervas in England in 1902
a larger version of this photograph along with shooting information & many others can be found here
classics Photo Gallery by Artichoke Vinagrette at pbase.com
hope you like