Image from a Soviet stamp Issued in 1968 in honour of the 50th anniversary of the Red Army. It shows the famous 1943 'To the West' war poster by Viktor Semyonovich Ivanov, 1943 and retreating Nazi forces near Moscow.
This historic image is available as three kinds of mug at out Etsy store:
Ceramic mug 11 oz: https://daughtersoftheempire.etsy.com/listing/1681430504
Ceramic mug with accent colours: https://daughtersoftheempire.etsy.com/listing/1695619147
Ceramic mug 15 oz: https://daughtersoftheempire.etsy.com/listing/1681448736