Just done a massive update to the
Chevrolet WO numbers database.
Still trying to work out just what all the various WO numbers mean, then there are the R100 series of which I have 2, one of which is a C60X.
Some such as the WO3 (Truck, 6 seat personnel) and WO12 (Wireless Signals) are well known, but on the whole it's still a mystery.
Contract numbers are also there.
The letter M, S, P as part of the vehicle serial denote the Holden plant where they were built.
It's interesting to note Sydney manufactured trucks are mostly undated. The bulk of this list is for Melbourne and Sydney produced trucks, there are also a couple of Perth ones there too.
If you have any to add, please contact me. This is of course for everyone to share.