FJ: it doesn't appear to be broke. the parts are worth more than the asking price if it is so it's worth going to see in person if it's not too far to do so.
also with a straight handle, and jaws and pipe jaws that look like it has very little use i'm wondering if Parker might have put a few of that style out that way from the factory. i'm not the Parker expert so not sure about that last theory.
also a person that did break a slide under the dynamic on a previous vise and used a U BOLT to fix might have put one on this vise for preventative measures.
good luck
EDIT: I have readers on and that could be a crack on the static, but like i say the parts (screw, vise nut, screw holder, pipe jaws, swivel base and dynamic jaw and maybe the removable jaws all look like they are in great shape.