Your vase itself looks like a bit of studio glass - the rim is heat finished, the body not fully round, but a tiny bit "wonky" (to me wonky is good.)
The surface decoration seems to have beeen achieved with the use of both silver chloride and tin metal - very much my style of beast - but I'm clueless as to how such an inscription came to be on it - the studio glass movement did not "officially" start until '62, but things such as this were being made in the 60's by artists who were working behind the Iron curtain, using the factory facilities as a studio glass artist would have done in a studio with only their small pot - for example, there are a couple of fabulous one-off vases by Feliks Nawrocki from 1965 in Wroclaw museum, both decorated with silver chloride and tin.