U-1503: England

4 3/8" X 5 1/8" (109mm X 131mm)

 

(dome incuse) W M. WARDEN & CO

                   WESTMINSTER

 

Picture courtesy Bob Berry

4 3/8" X 5 1/8" (109mm X 130mm)

 

(skirt incuse) WARDEN & CO / WESTMINSTER

 

 

Picture courtesy Byron Smith

4 3/8" X 5 1/8" (109mm X 130mm)

 

(skirt incuse) BULLERS LTD / LONDON

Note: This has British 5/8” threading

 

Picture courtesy Gene Kingsley

Note this style has been found in Australia and England.  U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.

ReturnReturn to the National Insulator Association home page