No maker's mark, so manufacturer is unknown. Strongly resembles classic MCM glassware. Beautiful plum color is in perfect condition with no chips scratches or cracks. I don't remember where or when I acquired this, but I've had it for about 40 years. Please check out the picture that shows a bubble in the rim that I found. Finally, I decided this lovely piece needs a new appreciative owner. It could be you! rev 10092023