BeeSee & KGB.
stamps are about tiny details and "perfection" based on the opinion of much wiser people than I am. btw based on the perf, the difference is 1/2 perf horizontal and 1/4 vertical,
in the links below I don't see such a stamp neither in 1956 nor in 1939. So, what you are telling me is that, its normal or common thing without any rarity?
Whats the rarity than in the ones sold through cherrystone?
http://www.cherrystoneauctions.com/...&lotnum=1442http://(20130207) Not allowed by the Staff.com/en/stamps/stamp/481493-Definitives-Definitive_Issue_No6-Soviet_Union_USSR
http://(20130207) Not allowed by the Staff.com/en/stamps/stamp/283847-Definitive-Definitive_Issue_No6-Soviet_Union_USSR
https://en.wikipedia.org/wiki/Defin...Soviet_Unionhttp://www.stamprussia.com/56_im.htm Thanks,