Can you post pictures of the other side? For me, I barely called it a 4.5 yo. It's definitely 3.5 but likely 4.5. I would like to see the other side too as it didn't seem to have uneven wear on the injured side.Much appreciated. For those who mentioned the injury, this side was the 'young' looking side, with less wear-which I assume was due to pain chewing on that side. I may at some point do some exploratory surgery.