The station "Kievskaya" was built in 1954. Inside it is covered with mosaic panels commemorating the friendship of Russians and Ukrainians. Surprisingly for 1954, in the corner of the mosaic called "The struggle for the Soviet government in Ukraine," you can clearly see a soldier with a laptop, talking on a cell phone. 

Some people say it is not a laptop and not a cell phone. It may as well be true. The confusing equipment of the soldier in the mosaic is an old portable radio set. He talks to somebody using radioset and strange thing in his other hand is thought to be a cup.