U-1321: Spain

3 3/8" X 3 3/4" (83mm X 92mm)

 

(dome incuse)

{Manufacturas Ceramicas, SA}

 

 

Picture courtesy Bob Berry

3 3/8" X 3 3/4" (83mm X 92mm)

 

(crown incuse)

                       66

{Maker unknown}

 

 

Picture courtesy Bob Berry

 

3 3/8" X 3 3/4" (83mm X 92mm)

 

No markings

 

Picture courtesy Bob Scafe

3 3/8" X 3 3/4" (83mm X 92mm)

 

No markings

 

Picture courtesy Bob Scafe

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


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