USSR Time Key - Diascope Olympics 1980

USSR Era Souvenir Key
It has a built-in diascope, and by pressing the button, you can change slides (the slides show various notable USSR objects buildings/places).
On one side of the key is the symbol of the 1980 Olympics.
In excellent condition with the original box.
During the USSR era, it cost 5 rubles 13 kopecks.