U-2017: England
3 1/8" X 5 5/8" (79mm X 143mm)
(crown) B.S.G.D.G. / J. D. / W.G.R.G.
Picture courtesy Elton Gish |
3 1/8" X 5 5/8" (79mm X 143mm)
No markings
Picture courtesy Rick Soller |
3 1/8" X 5 3/8" (80mm X 132mm)
No markings
Picture courtesy Mary Ann Pike |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.
Note: B.S.G.D.G. likely stands for "breveté sans garantie du gouvernement" (French: patented without government guarantee)