The "Great War" forever changed the map of the world ... on 50k stamp of Latvia, Latgale Relief issue single National Postal Museum 15k Surcharge and overprint on 35k stamp of Russia single National ...

when the stamps returned to their pre-war rate. Likewise, the rate for postcards was raised from 1¢ to 2¢ during the same time period. World War I also saw the popular rise of picture postcards ...