Hi, I like this vase. I do not however have a lot to say about what it definitely is, who it is by. If you bought it from the Czech Republic, there is more chance of it having an unfinished base and being from Skrdlovice. I would look in the Pardubice pattern books during the fifties section, to look for this shape and height. The colour was used by Skrdlovice at this time and other good quality factories in Europe too. The lines inside the glass are not a problem they were always in the vase. Glassmakers tell me it is something to do with the melt and ideally with the right raw glass and temperature and other things, this can be minimised avoided. Others may have more specific descriptions, but they have been there since it was made and is not a problem. You have already started finding nice glass!
Robert (bOBA)