Hi Jindra,
At least some of the recent Libochovice production was, in my opinion, not from original Barolac moulds. I had a Libs seahorse vase, pattern was the same but the elements were differently proportioned, the fish in lower relief and importantly the mould seams did not follow the original wavy line of the seaweed as per early vases, but instead were dead straight.
The name Barolac was also used by US importers Weil, not sure of the date but post war & I'd guess 60s. confusingly, however, they seem to have labelled a wide range of Czech pieces, including old Hoffmann & Schlevogt patterns as Barolac. Weil impoted pieces usually carry a distinctive black on gold foil label reading 'Barolac made in Czechoslovakia, Weil, exclusive importation'.
Steven