1941 ESSR 10 kop upfranked Soviet stationery w. advertising line, Tallinn-Assamalla

Michel P160 02, with advertising line. In my opinion scarce or even very scarce when used in Estonia in 1941. Stationery was issued in 1941, possible use in ESSR period was short. War between USSR and Germany started on June 22, written June 29. Text on the back side reads “Must have started vacation from today, but now there is much more important to do than to rest”.