"It's Ladislav Palecek, pattern no. 7414, 1974. I have not seen it, but it was quite usual in Skrdlovice to make a hole in the bottom of the vase and make a lamp base. (Frantisek) Vizner personally drilled the holes, because he could not blow the glass so he helped this way :-) "
Tack Pia och Jindrich!