1941, free of charge fieldpost letter so-called triangle letter mailed at the Station Busskum and addressed to Awgustow Belarusian SSR (from author by mistake Ukrainian SSR written) ZKr (part of a cancellation) BOZKEI . KUST 21 5 41 partial in Latin letters, arrival postmark SSSR 28 5 41 AWGUSTOW BSSR at back, the letter dated from the time before the German descent on the Soviet Union and as the associations the red army en masse style direction western frontier postponed were, therefore also no mandatory censorship stamp, although a twine at bottom margin, rare and unusually historic document, time typical age and transport traces