Canadian Chevrolet Maple Leaf 4x4 artillery tractors?

[nuyt]

great pics,
but now I am confused:

1. what is the difference between MS en YR?

2. the second pic 1941-42 model is the type of truck I am talking about that was pictured in 1945 as possibly one of the survivors of the 96 deliverd in February 1942?

So KNIL had by March 1942:

- several types of pre-May 1940 imported Chevrolet and GMC from Europe (Antwerp, DAF and Rotterdam?);

- several models of Priok assembled Chevrolet trucks (late thirties and 1940);

- normal but stalled 1941 Priok assembly;

- 750 MS 4x2 trucks that were assembled at Wonosari;

- 96 4x4 Chevrolet trucks of 912 assigned (of 2000 ordered) in february 1942;

- unknown type and number of Chevrolet 4x2 or possibly 4x4 COE trucks converted to overvalwagens;

- and probably some more?

Nuyt