This vase is identified as line #402 in their 1940 catalog reprinted by the Cambridge Society. There is a small version of this vase, 8" #782. Coors: Made in many of Cambridge's transparent colors, Ebony and Crown Tuscan. We do not know if it was made concurrently with the variation which has the inverted "V" or darts at the bottom style or if it was a later variation.
Etch shown on the vase is E 717. Etching also has a butterfly in it but it is hard to see because it is on the back side of the vase.
