http://img600.imageshack.us/img600/6669/img20120219173452.th.jpg http://img864.imageshack.us/img864/5169/img20120219172832.th.jpg I was unable to geta good picture. The marking is partial, a circle with a 25, mexico D.F. I am assuming it is a large 925 in the center of the circle with words borderi...