NB! 1941 ESSR registered heavy printed matter wrapper w. mixed franking, Tallinn-Moscow

Soviet rate, posted 27.5.1941. Late use of Estonian carrier pigeon stamp, mixed franking with high value Soviet stamps. Arrival postmark 29.5.1941. Printed matter 800-850 g 3,40 + 0,30 registering = 3,70 roubles. Rare.

The size as displayed on the first photo is 25 x 19 cm, bottom can be inserted into cutout or folded back (existing folds). Fits A4 page.