Not mine, and no affiliation, but saw this on ebay:
https://www.ebay.ca/itm/1990-BMW-5-S...EAAOSwTLpbLeZX
Has a buy it now price of $65,000 USD, its #061, Alpina Blue, cloth interior, 164,000 km.
I actually have driven this car, as it is local to me, I drove it about 10 years ago before I bought mine. Looks like its been paint and some work done since.