Hi,
although the mould lines can´t be seen, this vase should be mould-blown.
I think it´s been made by Borske Sklo / Czech. Some examples of their
output can be seen in Mark Hill´s ´Hi Sklo Lo Sklo´. I don´t have my copy
at hand right now, but surely someone will jump in and give you further
info or correct me, if I´m wrong.
Regards,
Dirk