Congrat's to you on a nice find of the buttons, bullets, and other relics. What is up with the Jason Mask/head? I guess Jason was running around then too. The only reason there weren't any sequels was because there weren't any TV's back then......I reckon. Lol
In some societies busts are made of deseased, or casts of the dead in order to keep their likeness for generations to come to respect/see. Greeks, Minoans, Romans, this may still be practiced in more rare to find cultures.