Is that the one from his speech on the 7th anniversary of the international? I was saving that one
Well he didn't really talk all that much about what he foresaw either in the transitionary period or after so it's hard to tell.
All the dictatorship of the proletariat means as far as I'm concerned is full executive power in the hands of a state under proletarian control. He refers to it (without using the term DoP) in the manifesto too. Dictatorship
by the proletariat rather than a dictatorship
over the proletariat.
As far as I'm concerned that never really existed in the USSR (for reasons partly beyond the Bolsheviks' control but that's another matter entirely).