Oh, sorry, I wasn't meaning to say that Harrach had anything to do with the ones Dirk showed, just referring to their earlier appearance in the thread.
For all I know, yours could be designed by Scholler, too...I just meant there was no conclusive evidence of it. It's kind of hard to see the details in the Scholler examples to do much meaningful comparison, though they do sort of have a molded look judging by the way light is refracted.
I dunno, I'm not adding anything in the way of ID info here - wish I could!