Most perfect display of technique you have ever seen?

Asking here because if I ask on /r boxing, casual ass fans are going to over load me with shitty examples.

What is the most perfect display of boxing technique you have ever witnessed in a fight?

Everybody wants to perfect the sweet science and ofcourse nobody can be perfect but I would like y'all to share perhaps clips etc of the closest thing to perfection you have ever personally witnessed on video.