This is a single, small Tiffany Favrile cordial glass.
Approximate Dimensions: 4.65″ and 1.5″
Marks: The base is etched “L. C. T.” for Louis Comfort Tiffany
As you can see in the picture, this unique glass has that Tiffany iridescent, gold-ish, coloring. Uniquely, this one has a hint of red to it, which I have not seen before. It is in excellent condition, but do note that as hand-crafted and blown glass there are visible imperfections that add to the authenticity and allure of this remarkable find.
To see more pictures, see it at my Antique Store.