Thanks again for not abandoning us, this is not an easy quiz for sure.
Regarding the RHD vs LHD question, there were several countries prior to WWII that were in a nominal sense a LHD country but where many private and commercial vehicles were fitted with RHD. Italy and Switzerland come to mind here. Then of course there was Sweden, one of my 4 "adopted" homelands, where it was a declared RHD country but virtually every car and truck was LHD and more or less only busses and Postal vehicles were RHD up until 1967.
The next question is it depends on where you live, but WWII began for Europe in 1939 and I assume you are using this as the date from which to go backwards. or 1934 as the build year for this beauty.