Good morning! I have contacted all the "usual suspects" for help without success so this is an attempt to plumb the worldwide assets of the H.A.M.B. for correct information. The attached photo is of a 1923 Case Truck. These were not built in Iowa, but in a family break-off plant in Wisconsin from 1921-25. This rare example in under restoration here in Tucson. A question has arisen as concerns the vehicle's proper chassis frame color. Black is obviously the default. But, as you can see, there is a possibility it might be "Case Green". This restoration is for a museum whereat this truck will be a principle display so we'd like to get it right. Can you help directly or point me to someone who can? Thank you.