Vintage Sterling Silver Mexico Aztec Face Money Clip Signed

Presented for auction is this Gorgeous Vintage Sterling Silver Mexico Money Clip. There is a detailed Face that looks like some kind of tribe. This Money Clip is signed on the back but it is very faded from age. I was able to make out Sterling Mexico, but not the letters of the designer. This Clip measures slightly more than 2 1/2" x 1 1/4"nand it weighs 12.5 Grams. It is in excellent vintage condition. Thanks for looking.