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Glass Identification - Post here for all ID requests => Glass => Topic started by: Tim on January 10, 2011, 12:57:07 PM

Title: Help ID Borske Sklo?
Post by: Tim on January 10, 2011, 12:57:07 PM

Hi I came across this in a charity shop. Something about it caught my eye, thought it might be Borske. It is 11 inches high, the colour seems right as does the shape. It has a machine cut and polished rim. However it does not have an impressed cross on the base which would have been left by the four part mould. If anyone has any ideas I would love to hear them; even if it turns out to be from TK Maxx.
Thanks Tim

Title: Re: Help ID Borske Sklo?
Post by: Chris Harrison on January 10, 2011, 01:35:40 PM

Any mould lines could have been fire-polished after the vase was shaped.  Though it looks as though the horizontal ribbing was perhaps done by hand.

How is the base?  Ground flat?  With a polished or torch-melted punty mark?  Could you post a pic?

Title: Re: Help ID Borske Sklo?
Post by: Lustrousstone on January 10, 2011, 01:44:43 PM

The base will be "from the mould", as the top rim is ground and polished. The item will be mould blown, not hand shaped.

Title: Re: Help ID Borske Sklo?
Post by: Chris Harrison on January 10, 2011, 01:56:59 PM

Probably, but not guaranteed. 

If the vase is decorated with ribbing on the inside, the piece would have to be cracked off the blowing rod and stuck up on a punty to allow access.

Title: Re: Help ID Borske Sklo?
Post by: Tim on January 10, 2011, 02:03:26 PM

Hi thanks for the response. I have posted another picture of the base, and it is ribbed on the inside.

Title: Re: Help ID Borske Sklo?
Post by: Lustrousstone on January 10, 2011, 02:09:33 PM

Internal optic ribbing is created by blowing into a smaller ribbed mould and then blowing to size in a smooth mould. This removes the outer ribbing but leaves the internal ribbing; thus a base attachment to a pontil iron is unnecessary.

Title: Re: Help ID Borske Sklo?
Post by: Chris Harrison on January 10, 2011, 02:53:40 PM

In a factory or large studio you would use a mould.  If you can't afford to have a mould made up, you can also do it manually, using a tool shaped rather like a Zulu knobkerry (a stick with a ball on the end of it), and then re-shaping the outside of the vase on the marver.  That's how it was demo'd to me, anyway. The ribbing was spiral.

Title: Re: Help ID Borske Sklo?
Post by: Tim on January 10, 2011, 04:49:35 PM

Hi thanks for the info. It is definitely moulded. Any ideas as to manufacturer?

Title: Re: Help ID Borske Sklo?
Post by: Chris Harrison on January 11, 2011, 02:53:12 AM

Novy Bor / Borske Sklo is as good a guess as any.
Though I have a blue jug and glasses with a similar optic finish, and was told they might be from Empoli (Italy).

Title: Re: Help ID Borske Sklo?
Post by: Tim on January 15, 2011, 01:27:13 PM

Thanks for that. Is there anyone else out there with any idea who manufactured the vase; I would love to know for sure?