Old front end loader. I got it believing it was for an 8N, but it's not.
I don't know the brand or model #. Measurements I took are below:
Front cnxn to back cnxn - 75" to first hole of lower bolt pattern
Side to side - 42.5" oc, upper pattern
(Lower pattern is 36.5" oc across)
Back bolt holes - 5" apart, front to back