A disintegrated transmission mount from the rear of a rear leaf spring of a Rover P5. Ordinarily, there is a triangular piece of metal. The bottom of the triangle is bolted to the leaf spring, and the two other sides are attached to some rubber bushes which bolt into correspondingly-angled mounting points on the chassis. In the picture, the rubber mounting bushes have completely separated from the steel triangle; nothing is locating the rear of the spring in place.
https://weirdautos.files.fedi.monster/media_attachments/files/113/334/971/094/835/655/original/0f99bfdcdabc22a7.jpg