Yes, that's a very big secret. (And a very big shame.) Our government doesn't want to publish even the mintages of the coins that were issued in 1920s !!!
All of you search for "black cat" not in that to "dark room" …
All is much more prosy, without "secrets" and "shame"...
It is not necessary to mix a collecting with a policy. And a post factum "to strew a head ashes".
It is not necessary to be ashamed of history of the Native land. She should be known.
RSFSR and the USSR were always numerous on the population.
That all on all sufficed, the government had "to start the machine tool".
Therefore in domestic catalogues opposite to releases of those years there is a value "circulation mass". To consider let out then, now it is simple, it is impossible.
And you "secrets", "shame" …
Policy, it always and everywhere "dirt" …
Igor