Quote from Guest on December 27, 2019, 1:33 amVINs with 17 characters are post-1980 vehicles when the modern vehicle identification system was established. Obviously all the Sonetts were made before 1980 and thus only have manufacturer-defined number sequences. If it's not in the SaabSonett Registry then it has never been entered previously. When you do a VIN search on this site and the VIN isn't in the database, you'll a notice that it's a legit VIN but not registered OR you'll get a notice that you have an invalid VIN.
Doing a Sonett VIN search on any site other than this one is a waste of time.