Vintage Russian Key-Wind Robot

Mechanical robot toys have been made for a long time, and the best examples are the fantastically lithographed tin varieties from Japan, circa the 1950s and '60s.
This much simpler robot, made of red plastic with a key-wind mechanism, hails from 1970s-'80s Russia. Standing about 7 1/2 inches tall, he sports a metal chest plate with cut-out circles. As he walks, a multi hued panel behind the chest plate spins, causing the colors within the circles to change.
I guess that's his super robot power: color-changing circles. His designers must have been all out of laser beam eyes and ray guns.

"Beware my color-changing circles! Flee before me, puny human!"