It is time to deal with the most expensive postage stamps of the USSR, given that this is one of the most frequently asked questions. For the cut-off point, take the price equivalent to 1000000 rubles and will consider only single stamps and blocks.
So almost all the expensive USSR stamps sales were made at https://russianphilately.com/- online stamp shop who sells Russian related collectible stamps. This is not surprising, given that immigrants from the Soviet Union make a very strong emphasis
