Ajla was quick on the draw with his correct identification of the Bonneville clue. As a former Bonneville owner, he certainly knew his car.
Today, do we have anyone (former owner or not) who can get this one? Perhaps you used to wax one of these and became intimately familiar with it’s every body seam and louver? If so, I hope that yours had a better better paint job than this one. But I guess lots of old cars could benefit from a little Vaseline on the camera lens.