This belongs to a very good friend of mine. It looks quite special. Is it cameo glass? The picture does not do it justice - I could not get a good one of the light shining through it. It is 'patterned' att around with three big, but not deep, dimples in the sides. Base is marked as shown. Ground off pontil but still with a bit of rough.
Any ideas welcome.
Cheers
Christine (Still not cured!)