40 mm Bofors AA guns made in GB and US

[Tony Smith]

Originally posted by David_Hayward

The above shots of Ford Model C39Q F60B Bofors trucks dates from 1943...Canadian made guns?

Are you certain the pictures actually date from 1943, David? These trucks look like 1945 build Fords, with notable features such as the sling/tie-down hubs and "Ford Canada" stamped under the headlights.
I am going to hazard a guess that these may be Canadian built guns, nothing certain but the different colour shades in the paint (How poor an argument is that?). On Australian built Bofors all wartime pics I've seen show one overall colour, probably Khaki No3 (See Hanno's Aussie Self-Propelled Chev). In Australian pics that mention "Guns from Canada" or similar, the gun seems a darker colour with a paler painted Autoloader cover (Compare the Pearsons pics with the Aussie Ford SP truck). Is that valid or just a coincidence?