Here is a rare large format tripod head from Linhof. It features a ball and socket head as well as full 360 degree rotation of the main post with 30 degree intervals marked. The divet cut into the tripod head allows the camera to go fully perpendicular to the tripod for easy vertical shooting.
This tripod head has some cosmetic wear on the metal body but works perfectly. . The mounting plate is slightly warped but this does not affect performance, it still attaches securely to the camera.