I agree with the nice find as well as the moose pic with one antler.. There is really no set rule on how a moose will grow it's antlers.. A couple of years a go a 2 pointer was shot that was a big sized moose. His antlers were long and solid but it was lacking any other points.. Here is the pic of the antlers of mine shot this past fall. It is also a 4 pointer but they grew different than the one you have shown.