The 3-point hitch was the worst thing to ever happen to a disk. Pull type ones work much better. I agree that it’s worth scrap iron price, however you likely could get at least double that if you cut off the extra back gang neatly, to make it look like it was supposed to be that way.
Double gang row 3-point disks work like crap anyhow, and a single row one would be worse yet, however the uninformed buyers wouldn’t know that, and often pay crazy money for any deer “food plot” equipment.
I’ve got a complete one just about like that, and I haven’t used it in about 10 years (mostly because I also have an 8 ft and a 6 ft pull type, one on each property (about 20 miles apart), where I have food plots.
The only time I liked or used the three point one, was when I had another property between those two, and used to transport it over the road with my tractor. I only liked it while transporting on the road, as it never worked very good, when I got it into the ground.
I only keep, it in case a neighbor ever wants me to work some land for them. I don’t have much time for that now but I may, after I retire from my factory day job, in a few more years.