the pattern is rather simple than sophisticated
Ah, but that depends on your definition of sophisticated!

I think I know what you mean - the goblet is not covered with masses of engraving. It's a delicate pattern, neo-Renaissance (which I believe would fall under the rubric of Historismus), and it's polished. You're right that it's not the type of thing shown in books about Bohemian glass (the ones I've seen, anyway). Corning has an extensive collection of engraved goblets (many Bohemian) in a study area, and I took lots of photos, but can't find anything very similar there either. Nor have I seen anything like it online that falls within the right time frame. To me it seems extraordinary, rather than ordinary, because of the delicate, restrained, "simple" quality to it, during a period not known for its simplicity of glass cutting.
I meant to contact Passau, and completely forgot. Thank you for reminding me. And I was happy to see the book you recommended is quite affordable. Ich lese Deutsch ziemlich gut, solange als ich ein Wörterbuch dabei habe! Danke nochmal.
Have a good time in France with Marcus!