VoilĂ the promised pics of the ashtray.
Well, at least I am 90% sure that I got the ID right -- after looking through the pattern books from 1952 till 1963 I was quite disappointed not to find anything similar; but in 1951 (where I rarely look) there is an ashtray PN 5134, designed by Milena Veliskova, which seems to be spot on. Mine is just short of 15 cm lenght, so quite close to the 14 cm in the pattern book.
And Santa brought another nice piece of Czech glass, a huge Jurnikl "Hobnail" vase :rah::ru: :rah:
Michael