I purchased the tractor and mower together, but I do not know the brand of mower. The owner did not know the brand either. It is a 4 foot mower with a Superior gearbox. The tractor is 1986 B6200. Any help is appreciated.
Looks like it might be a Superior finish mower since it has their gearbox.
I found this website for Superior. May be an older model of their EM series.