Go here http://www.etk.cc
and put in the last 7 of your vin it will give you all the cars options/build sheet.
I can't believe only 12k miles. This my second e39 first one was my first car sold that one with 176k on it. The one i have now has almost the same mileage. Best second car to own IMO.
hahaha just looked and see you have a 335 too. I leave mine in the garage and drive the 530 around all the time.