79 kenner Alien Dome
Reproduction  alien dome.
Dome is transparent clear plastic. Not a cast.
NOTE: It is a misconception that the original dome snapped on.
It just sits on top of the head. Hence why everyone lost them.
Line up the back of the dome to the back of the head to install correct fit.
These are susceptible to heat, do not display for long periods of time in the sun.
Domes are not perfect and may  have slight imperfections.