I would not have left that sitting on a shelf. I'd have bought it because it's gorgeous and because I could find out later what it is. It wouldn't matter if it took years. Even if it is a marriage, it
was a piece worth saving and it will bring you pleasure whenever you look at it.

We just need somebody who knows more about this kind of glass than we do.
There can't be too many contenders. I think it pre-dates the studio glass movement, but has many of the features that define studio glass. Very few glassmakers fit into that sort of category - Monart being one.
Nigel Benson gave a talk on this very subject at the Edinburgh Conference.
The studio glass movement has a very specific starting date. The 23rd of March 1963, when the Toledo lecture was given announcing the development of the small kiln for the use of individual artists and the finding of a suitable metal to melt in small batches. So these older individually worked unique pieces cannot be called studio glass, but do have a great deal in common with it.
Grey-Stan?