The picture below shows a larger front and back view of thus Old GumballMachine Prize Space or Diving Helmet Plastic ToyRing. It looks like a helmet or mask. The ring is not dated but it is believed to be from the 1950s or 1960s. The maker is unknown. It is made of molded dark blue plastic. To judge the size the ring face measures about 5/8'' wide. It appears to be in mint condition as pictured.