Thank you all for all these infos,
Not sure I have catched correctly all the replies.
I don't currently have the data card handy (i've asked) but from the VIN on the plate, my understanding is what is represented here is the manufactured date, NOT the date of ownership transfer to the first customer, thus if that car was really manufactured on 12/70 the serial # should be a later one, that's why i'm questioning myself about the "fakeness" of that plate (I know anyone can make it's own).
The production statistics table that I have found in these pages is 100% correct/trusted by this forum, right ? Hence the car plate is a fake!
Regarding the engine, with your explanations, YES, it's a LHD, and NO it's not a Manual but an automatic, thus it's not matching numbers BUT the engine itself comes from another 280SL ;-)
The engine # is stamped correctly, I also have another serial that I don't know what it relates to, see attached pic (052).
Actual papers are reporting the above mentioned VIN and engine #.
I'm waiting for the Data Card.
Thanks again.
Eric.