The bucket has seen some abuse. On this tractor or another, I couldn't say. From the overall look of the tractor, I'm guessing that the loader came off another tractor and was added to this one, but that's just a guess on my part.
There are two hooks on either outside edge of the bucket and two tow balls. The top of the bucket is bent pretty bad, indicating to me that too much weight was on one of those tow balls.