Harmy said:

Yeah - as far as I know, there never was a 1995 Czech VHS release and there were no TV airings of ESB and ROTJ before 2002, which was of course the SE, so those "1995" dubs are likely the ones that were used (and first appeared) on the '97SE VHS release, so I think they only exist in the '97SE cut form and since there were some dialog changes, you can't really use them for the original without patching them up with the old dubs.

Plus the '97SE dubs had awful translation.

A small correction/explanation - the czech 1995 dubs were done for CT1 (I know that because I taped them and watched them pretty often :-) ) and not for VHS. The same dubbing(s) were used for the 1997 SE, they dubbed just the new scenes with (if I remember correctly) the same actors. So they exist both for the original cuts and the 97 SEs