Heated rear window screen

For a while I assumed my 400 didn't had a heated rear window screen. When I visited the Interclassics car show last week I was able to inspect some other 400s. Due to the good lightning on some of the cars I did notice they had heated rear windows after all. Turns out the heating lines are very thin and hardly noticeable with the eye. So on my return I did had my car checked again and yes, I'm glad to confirm it did had the vertical heating lines. This was the best picture I could make: