Hi John,
I researched some early CGRs the other day. Although the glasses were produced for a long time. From my archive, it seems they appeared in an advert in Vol III, 1948, No1, with a decanter too, as part of the the "Harrachov special liqueur suite 2046...." They probably appear in later CGRs too. I cannot help with the designer though, Metalek seems very possible,
Robert (bOBA)