Selfmade as a tin - cast when I was a 15 or 16 years old schoolboy in the former G D.R. (German Democratic Republic a.k.a. East Germany)
My girlfriend at this time "offered" 2 glitter stones as eyes (they were called: Strass stones) but she had only white not red ones... so we could not go together much further ;))
Fixed with a screw on the backside - it's an absolut globally unique item ... hope so...