[Bruce Parker (RIP)]

Thanks everyone for your replies. The reason I am confident the base colour is Brown No.2 is first, that the truck has its original factory paint as shown by the W/T on the cab door and second, that this HUW lacks the radiator overflow can making it post 1942 and also is the three body door style instead of having the right body door replaced by the spare tire recess which happened in the spring of 1944. These details put it smartly within range for wearing a coat of brown.

The SCC14 Black is described by Stammer as equivalent to Revell (model paint) R9 which cross references to Tamiya XF63 German Grey. I had a look at my local hobby shop and see it is really a dark grey, easily duplicated by cutting a little lightener in Tremclad flat black as Jordan did.