Must admit the most interesting thing for me about this car is the Türkis E3 nearby (pics 13-17).
The argument Italian cars are rust-free because of the climate works only with people who don't know most BMW went to the wealthier regions in the North where it can be quite cold and wet at times. Bergamo might be right, the Alfetta (a classic, even with the ugly plastic bumpers) has that licence plate. The sticker in the rear window (pic 17) says "Bergauto", a BMW dealer in Bergamo.
I'd like to know who "Auto-Schroeder" are. It's in the names of many picture files. Unfortunately, "Schröder" or "Schroeder" is one of the more common names in Germany.
Who told the seller LSD was a CSL only option? Probably not the president of the BMW Coupé-Club (E9 club). He is a learned gentleman and certainly knows better.