Glass Identification - Post here for all ID requests > Glass


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:shock: :D :shock:

That's very interesting, Ivo!

I have a lovely bowl/plate, marked "Unikat". It is slightly similar to schleiergraphit, (and also has a similarity to Bo Borgstrom's pattern that translates to "Heather"). It has a greyish-black cobwebby "body" at the base, full of gold aventurine bubbles. This is cased in the main body/stand of the bowl, the continuous flat surface is thick clear glass. I know it is not unique in the sense of there only being one of that design, as I have seen 4 others, also marked "Unikat", but is unique in that it is an individual piece, every one will be different.

The bits of shleiergraphit I have certainly do not suffer from yellowishness. They're a lovely slate-grey-blue crystal, but you've just got me checking the Unikat bowl - it is more yellow! I had assumed the slight difference I noticed was because of the bluey-grey inclusions in the shleiergraphit and the gold in the Unikat, but I just got them out together to compare in the sunlight!

Can I assume Unikat was later? :D

My main problem with P&P seems to be water staining. German water is very hard. Apart from that, there can be burst bubbles in the base inside schleiergraphit. :cry:

I also have a bowl that seems to be similar, but a bit more primitive than schleiergraphit, mostly blackish bits and a few reddish bits in the glass, like the picture on p160 of Lesley Jackson's 20th CG.

It's nice having the two similar pieces to add to the shleiergraphit.

My only real moan with it is that, unlike most other glass, it does not improve, or even work together, "en masse"!  :twisted: :? :twisted:

(Am I convincing you, Lenore? :lol: )

the yellow refers to crystal made at the Weisswasser (east German) plant after 1989, not to the Schleiergrafit pieces which were made in Düren (West Germany) in the 1960s.
Hard water deposits calcium, which is easy to fix with a bit of Antikal - but I think you mean permanent clouding by water acidity?
I've never seen P&P signed as "Unikat" as far as I know they only ever used the back-to-front double P - either moulded or acid stamped - and certainly not on all pieces.....


It has the double P too. It is a really lovely piece, not yellow as such, just compred to the very blue early stuff! :D


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