In good working condition. This thing can handle anything I could throw at it, including my 8x10 monorail.
Here's the manufacturer's specs:
"Intended for large format cameras, Professional video cameras and professional film cameras mounted with Super-telephoto lens. Rated at 12kg load without any problems.
The head features two levels at the side of the quick release mount, a panorama-lock and a friction control. The ball is locked through the big lever on the right, which can be turned up or down to lock the ball. The horizontal position sets the ball free, whereas this "free"-setting already has enough friction to hold a small to mid-sized camera/lens combination in place."
Asking $75 for both the ball and 1 plate.