Wikimedi'Òc

Stamps of Germany (DDR) 1987, MiNr 3133.jpg - Nightflyer

The Soviet Union 1970 CPA 3861 stamp (Boy and Model Toys) cancelled.jpg - Bin im Garten

The Soviet Union 1970 CPA 3861 stamp (Boy and Model Toys).jpg - Matsievsky

The Soviet Union 1970 CPA 3859-3861 stamps (World's Fair "Expo '70", Suita, Osaka, Japan, 03.15-09.13).jpg - Butko

FEDOR 2021 stamp of Russia.jpg - Materialscientist

MARKER 2021 stamp of Russia.jpg - Materialscientist