USSR Russia 1978 Locomotives Steam trains set of 5 stamps on special covers with cancellations Trans-Siberian Railway route

Each cover features a detailed description of the locomotive on the back, complete with a stamp in English. The front features cancellations indicating departure from Moscow's Yaroslavsky Station, arrival in Vladivostok, and a stopover in a mail car on the world's longest postal route, Moscow-Vladivostok.