I'm driving a Euro car found by accident. When looking a couple of years ago, I did not have Euro in mind as Euro version cars are not common in the US, probably less than 10 percent
I searched high and low in the usual sales venues going thru my check list. Eventually the car I bought just happened to be a Euro car.
You could Google "Mercedes 280sl for sale Euro" to see what comes up.
A word about Euro version looks: some others share your appreciation for the clean lines of the Euro cars and have modified US Version cars to look like Euro cars by installing Euro headlights, removing the fender markers and bumber guards. But these cars are not original Euro version cars if that's important to you.
I guess it is possible to locate a Euro car overseas. I'm not familiar with the Pagoda market outside the US.
If the look is important to you and not originality, you will have a lot more choice of cars if you find a nice US version car then do the mods described above...can always be reversed to the original look. Estimate new Euro headlights at about $1200 with the chrome surrounds...removing the fender markers needs only a hole fill-in and paint blend to cover up the scars. The bumper guard holes can be plugged with Chrome buttons or perhaps used to install a pair of Euro looking front fog lights...original Hella fogs are on Ebay from time to time, maybe $100 to $150 a pair.
If it is important that the car be an original Euro version car, you can look for the Euro signs. A Euro 280SL will have stiff door pockets (not baggies), may have Kilometer Speedo and Celsius temp gauge, mirror in the passenger sunvisor, a data plate on the passenger side of the firewall...no bumper guards or fender markers (except for the distinctive Italian orange button light on each front fender.) The only definite "proof" is the data card which will show the ordering dealer country and the country of first sale.
For a look at a Euro example, take a look at Ole Beige on the Photo Forum.
Richard M, NYC driving an Italian version 1969 280SL