Not sure
Not sure , the sanction nr is related to batches of different types of vehicles . The 1940 manual has a list of four digit numbers each number represents a batch of either PU or CS 8 or C8 and so on .
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1940 cab 11 C8
1940 Morris-Commercial PU
1941 Morris-Commercial CS8
1940 Chev. 15cwt GS Van ( Aust.)
1942-45 Jeep salad
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