[David_Hayward (RIP)]

The truck would have been supplied by General Motors Suisse SA, in Biel or Bienne. You may have unwittingly answered a question that remained unsolved..which model was that trialled by the War Department in 1939 in front of DND representatives? I had no idea that there was a Model ACK-101 ...Bart's information is that the 1939-40 Models as supplied to the Belgian/Dutch armies was the Model 4930. The 100 series was a 1/2 ton / tonne bottom of the pile chassis...I thought that the smallest 4x4 was the ACK-353 1 1/2-tonner and that was I worked out the 4930...the 4929 being the 6x6 version.

Incidentally the Swiss Army purchased 15 1939 Model Chevrolet Master 85 Sedans converted to 1229 Phaetons and 130 1940 Sedans converted to Phaetons. These were used for towing munitions for many years. However I have never seen any evidence before of commercial vehicle assembly by GM Suisse; all their production figures are for cars. At least one of the '39 Phaetons exists today.