I've just added one set from a [previously unknown to me] glassworks in Czechoslovakia, called Ernest Pryl - the Glassworks Rosahütte (later called "The Rose").
https://www.glasstrinketsets.com/cms3/czechoslovakian/pryl-glassworks-rosahuetteThe text I've been reading about it says they made high quality glass in chunky cut designs like the example I've just added. I'm now on a mission to find more examples of their output.