Curt model 17499 tru track hitch rated for up 800 pound tongue weight and up to 8,000 pound trailer weight. Has 2 5/16 ball installed. I used this 2x when I bought my trailer and towed it to my land and when I drug the trailer home to trade it in. Its like new, believe I paid around $750 for it to be assembled and installed on the trailer. Amazon has it for $550. I have all the clips, brackets, even have the owners manual.
I would sell it for $300, or potentially trade for a gun or ammo, maybe some powder.