2 Peruvian Drawings - One signed. One unfinished. - Graphite- Artist Guess?

I discovered these two drawings that appear to be graphite. The shadowing and details are amazing.
I think they are Peruvian but I'm not sure.
One art piece is incomplete but I assume it is by the same artist because the two pieces were rolled up together.
I've adjusted the signature for better clarity. One photo is under black light.
Does anyone recognize the artist signature? Is this appear to be Peruvian?
Thx!