Over the years I have had some dealings with the very nice woman, Sandy, who curates the Etsy shop Elegant Etches.
I like to troll through her shop as she has beautiful items and is great at their identification. I came across this set of stemware and thought they were absolutely gorgeous. Stewed about them for awhile until I cracked and bought them.
Sandy told me that she thought that the line was called Mandarin, and that has since been verified. But the etch is unknown. I have posted the stems in a number of places seeking some information, to no avail. Someone said that the decoration on the ‘cube’ is ‘oriental’ not Greek Key as I had originally thought.
This line was made in the 1950s. Duncan and Miller used outside decorating companies, so this etch might be quite unique and never to be identified. But they are gorgeous.