Back when my grandfather was still farming he had a pull behind john deere mower. It was kinda like. 609 or 709 but I'm pretty sure it had three blades and was about 7 or 8 feet wide. It wasn't a bat wing type and I'd say about half way between a finish mower and bush hog. Has anyone ever seen such a machine. My googling Has only brought up the 609 and 709.