I have here the Antonin Kraft (1750-1820) Cello Concerto in C major printed in Praha, Czechoslovakia in 1961 (The number is "H 3296").
I read on this page http://imslp.org/wiki/Public_domain#Czech_Republic
that in the Czech Republic, all Czech government publications are in the public domain. This notably affects Artia/Orbis/SNKLHU/Supraphon, which was a government organization from 1948 to 1989.
So would this be public domain and is it ok to upload it?? Thanks.
p.s. I also noticed that all the Supraphon editions are blocked. Does that mean that they are not PD?