They came on some Viscount bikes. One of the, if not "the" earliest aluminum road bike fork. Notorious for breaking loose near the crown if ridden too hard. Most were replaced with chromed steel, but some bikes got a fork with a steel insert/pin. It's difficult to tell which bikes got the improved, but it is a theory after the company was taken over by Yamaha, the improved fork came on all of them. I have a bike with the improved version, I think? I'm not taking any chances though, so I will be putting a steel fork on it before I even attempt to ride it.,,,,BD