I would not consider anything called a forklift a classic.
Classic cars, now thats another story.

We are talking about a piece of industrial equipment.
The most coomon truck used to the Clark C500 when I started out. It's not a good truck, there were just a lot of them. And then there would be the Towmotor because people still call a forklift of any kind a towmotor these days even though they haven't been around for years. Just like people will call a bulldozer of any type a Caterpillar.

I don't think there is any forklift that is old that anybody wants. When I say "they don't make them like that any more" when refering to a forklift, it always means the forklift is a piece of junk and they are made so much better these days.