This car is registered as a 1983 model, according to the California Smog Check Database, but the trunklid badge identifies it as a 633CS… which wasn't built that year. In fact, as far as I can tell there was never any such model as the 633SC. Junkyard trunk lid and/or emblem swap? E24 experts, what do you think?
Whatever it is, this car has a five-speed, looks pretty good, and drives every day.