U-2261: Germany

3 3/4" X 3 3/4" 95mm X 95mm)

 

(dome inkstamp) RIG

{Rosenthal Isolatoren GmbH}

 

Picture courtesy Bob Berry

3 3/4" X 3 3/4" 95mm X 95mm)

 

(dome inkstamp) RIG

{Rosenthal Isolatoren GmbH}

 

Picture courtesy Bob Berry

3 3/4" X 3 7/8" 95mm X 99mm)

 

No markings

.

 

Picture courtesy Bob Berry

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


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