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)

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