The other one, look at the forehead/nose piece overhang. Nice.
The chin has a crack line around it. Not sure if it's just near the surface, or possibly the end part of the chin was broken at some point and reattached. If it was, it's a very good reattachment. Can't really see the line unless you're staring at it from close up or the lighting and angle is a certain way. It's there but not blatant. I try to be thorough.