U-1139A: Belgium

3 3/8" X 4 5/8" (85mm X 118mm)

 

(skirt red inkstamp)

{Defuisseaux}

 

Picture courtesy Lis Bergman

Note: This insulator was used with no inner skirt, but has a very large ridged pinhole that could support a cemented inner skirt like a Varley. 

U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.

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