[Fulltiming]

The eyebrow appears to have been introduced in the 1981 model and continued through the 1989 model. I don't have any photos of a 1980 model with eyebrows or a 1981 without them. However, there could be an exception out there that I have not run across yet.

I am still looking for a photo of #317, a 1993, which was the only Classic built after 1989 (#212) But I suspect it had eyebrows also.