@Rosie: :kissy: I´ll tell this evening...
@Michael: Sorry it´s not Graal technique, although you´ve come close unintended
literally (you´ll get the joke
when I solve this puzzler)
@Sue: You´ve got the essential point! :clap: Try to imagine only half of it left...

@Frank: I see you´ve got it.

Doesn´t it change the view on this weird and wonky piece once you´ve
figured it out? This isn´t however a recent piece, so it´s highly unlikely to stir up the debate anew.
It´s from the 1960´s or 70´s. I don´t think any of the ones made in this technique were finished - I
must assume we knew!
To be honest I can´t reveal much more than the technique and who made it, because the piece is so brand
new to my collection and I´ve only managed to get a fractional picture about this topic so far.
But I´ve found and just ordered a copy of the article the ´glassworker´ wrote about these and I look
forward to read about this matter...