I am restoring an '87 Champion including the need to replace all the original seats.
I saved the hinges off of the old seats I pulled out as I hated to just toss them out. They are not "like new" but what you see in the picture is dirt and the insides have some surface rust in spots but they would clean up. Perhaps someone has a seat with a broken hinge that these could be used to repair or could put them to use on seats they are building.
I'm offering these for free to anyone that can use them. I am in the Dallas/Fort Worth area but could also ship them. I may keep one set for a different project but the remainder are offered up for anyone that can make use of them.