Sue, thanks for the opportunity to be able to help you for once.....
Your vase is Czech, made by Libochovice a.s. and probably designed and modelled by Karel Zentner.
Pattern number is 1915/ diameter 200mm and 187mm high. Made from the 1930s through to the late 1930s, to the late 1950s, and possibly into the 1960s.
Regards,
Marcus