4 inches.  Unique spoon of this historic school in Butte.  There are a couple of spots on the spoon and I'm not sure if they could be polished off or not.  On the handle on the back are the initials E.M. - not sure if that is the person that made the spoon or maybe the purchasers.  There is also a few initials which I tried to capture in the last picture which to me look like P & B.