Ok thanks for that, that is helpful. When I lived in Geneva, from 2009 to 2016, I worked with the UN and had diplomat status also. We could buy under special programs from all car manufacturers, essentially it removed all taxes and import duties from new car prices, which in Europe especially tend to be very high especially on the more expensive luxury cars. Yet, when the time came in 2010 to buy another car, I figured out it was still far cheaper in the long run despite the diplomatic discount, to buy used and I ended up getting an 8 year old Volvo S80 with 40K miles for $10K, we still have it today with now 160K miles.
The Mustang is coming along nicely. Almost ready for its bare metal repaint, the V8 has been completely rebuilt with a hotter cam and new aluminum heads, should be close to 300 hp. We"re converting from auto to a Tremec 6-speed, adding air conditioning, etc etc. Should be finished toward the end of this year, I will post some pictures in that thread.
Back to your topic, finding original ownership information has alluded many, including due to privacy considerations on the part of Mercedes, dealers, national registration authorities, previous owners etc.