looks fairly ok, certainly good for the price!
Czechoslovakia, is it a warm place?
is it designed for all year around? at a guess I'd say it's perhaps 2 season's worth.
the soldiers almost certainly wear their clothing in the bag so take this into account.
if the cotton liner is anything like the one the nylon one the British Army issued you'll do best to throw it away!
(it was designed to keep the 58 bag clean, but just ended up tangling around the users feet!)