Hmm. I am not so sure. I like to think I am knowledgeable able artwork and art forms though.

[Well, unbeknown to him he was a Phantom Thief so there must've been something tricky there.]

It was a simple mask. [He's thinking back to it...] Almost like a masquerade mask - one that predominantly covers just the eyes as opposed to the whole face? White with an angular black design around the eyes.

[Simple, yet elegant. Now he thought about it, it had been a nice mask.]