thank you for the reply. I appreciate that you also find it a very strange colour combination!! The colour is very odd, I think plum would be the closest I could call it. Though the banjo (excuse me perfume collectors for inappropriate terminology!) perfume has a crystal stopper, the perfume itself is the same build as the bottle-vase, blue glass, cream, plum. Sort of a reddish purple, not actually a colour I have seen before as a casing much. As you imply, perhaps this indicates something older... THe provenance is slightly cloudy in that it was in the display cabinet of a lady (whose relatives living in the same house were expert Stuart cutters in circa 1912) so I really thought a strong connection to Stourbridge. The family also have acouple of pieces of that more known cased and cut Thomas Webb type pieces. CH British Glass 1800-1914 is something I need to buy quick fast too! The owner of the website could perhaps help me, as his specialism is exactly this subject, I may contact him.... Your cache pot would be interesting to see a photo of. I imagined that the odd coloured casing and blue transparent glass inside would have made this attribution quite easy somehow... it seems I was wrong there! I also agree the style seems pre 1900.......
studying glass is endlessly interesting!! (Your cracked Harrach masterpiece recently was a great read)