NOTE: This is somewhat related (a "soft" version of) to this question (Do/did non-dictatorial Communist societies exist?)
According to Wikipedia, "Socialism with a human face" appeared in 1968 and it is historically connected to "Prague Spring":
(..) political programme announced by Alexander Dubček and his colleagues agreed at Presidium of Communist Party of Czechoslovakia on April 1968
According to the same source this political's highlights were:
- greater freedom of the press and of culture and
- emphasized the need for personal initiative in economics.
- no envisage the existence of independent political parties
- no private ownership of companies
This political program did not manage to be implemented for a long time due to Prague Spring being crushed by the Warsaw Pact invasion.
I am thinking of a society very similar to what Czechoslovakia was in 1968 (a communist state under the Iron Curtain with very limited freedom of travel, expression etc.) + the political program principles.
Question: Did "socialism with a human face" actually existed in practice for a significant amount of time (at least 10 years)?