Now that's something you don't see every day! I've never see anything like it. I;ve seen extra main beams but always growing from where you would expect, not the side of the head. Awesome and very interesting.
That's a pretty cool & unusual feature - gotta love the odd ones.
This is a pic I got last year of a buck I named 3 bases. He literally has three seperate bases. Haven't seen him so I don't know what has become of him.