Favorite Salt and Pepper Shaker

I was just trying to organize my parent's basement and came across a bunch of old salt and pepper shakers that used to belong to one of my mom's relatives. Any guesses at prices would be appreciated. This one is my personal favorite, it's rather large, 4 in (h) x 5 in (l) x 4 1/2 in (w). The urns the bull carries are removable. There are no markings concerning origin.