Looking for information

We've got an old scraper in the family that my dad picked up back in the late 60s. He used it behind a TD14 dozer and later a 1800 Oliver tractor to cut waterways and dig a couple ponds. Looks like it's an Isaason Equipment brand. Does anyone know anything about these or have an idea what it might be worth?

Around here you'd get $200 a ton if you scrapped it.

I'd say a collector would be interested in it. It looks too good to scrap.