Trifari manufactures two lines: The Basic Line and the Fashion Line

I found this interesting tidbit in the background section of a lawsuit against Trifari in the 1980's. They describe that during this time, "Trifari manufactures under it's name, two lines of jewelry, a Basic Line and a Fashion Line. The only difference between the two lines is that Basic Line styles tend to remain the same over time, while the Fashion Line styles change approximately every six months. The Basic line constitutes abou seventy percent of the company's business"

I wonder if this was true over the life of the company, or only during the time surrounding this lawsuit - the 1980s?