Glenn Strange 'Frankenstein Monster Radio Speaker', 1990's Garage Kit was produced by an unknown creator. The original Frankenstein Monster Radio Speakers were made in the 1960's by the Captain Company out of Philadelphia, Pennsylvania and sold for $5.98. The speakers were made of blow molded plastic. They came completely painted and wired with a plug that could be inserted into a transistor radio.
As I understand it, this example I have for sale is the first attempt at a copy of the original speaker. This is made of a two part urethane resin roughly 1/4″ thick and assembly is required. Anyone with basic modeling skills can easily put this together and can always ask me advice.
I will soon be offering variations of this Glenn Strange head that will only be available here, at my Etsy website or from my friend and partner Paul Shapiro (Etsy 'Creativpal'), A World of Good. This should be happening by mid year 2018.