$400 Used 2005 Tsc 72
(Guessing on above stuff!)
I have a Chain Drag Harrow that came with tractor that I am not using.
It is 6 foot wide and 8 foot long, may be split in half lengthwise (or extended more if you have more), can be reversed, and turned over in use. It is very heavy duty, 5/8 rod or so, and is set up to be carried by 3 point lower links and a boom pole by included chain without dragging.
I suspect it is the one from TSC, but I do not know.
For $50 prepaid (paypal or such, NOT refundable, but credited to purchase) I will deliver it 100 miles around Richmond, Va. Or you could come and get it for $25 off.