RE: 3 year comparison
Horns change... a LOT... facial characteristics don't.
I've seen deer put a drop on his right side as a 3 year old... then on his left as a 4 year old... then back on his right as a 5 year old... then have it on both sides as a 6 year old.
I've seen deer have double split brows at 5 and then never have them again.
I've seen deer put on a drop after never having one when they are 7.
I've seen deer have non-symetry points as a 3 year old... and as of yet... not have them now for the last two years...
Horns change.