This may be factory. I've seen it called a forging bend or 'sway'. I've handled a ton of vintage wrenches and have seen dozens of examples, a few rather severe. Somewhere in the forging or tempering process they acquire a bend. I've seen them in a lot of old Craftsman wrenches. I had a set of larger Barcalo DBEs where every wrench had a sway. I've seen a few adjustables bent just like OP's. The two clues are that the bend is typically perpendicular to the plane of applied mechanical force and the tool shows no other signs of damage from having sufficient force applied to it aftermarket to cause such a bend. In OP's wrench for example, the jaw faces look too perfect for having been cheater-piped that extremely and the bend would require a force perpendicular to the force of normal use. Not saying for sure it wasn't run over, just saying that examples of wrenches coming from the factory with such bends is not all that uncommon.
