U-2370: Japan

2 7/8" X 3" (73mm X 75mm)

 

 

(skirt inkstamp)

 

Picture courtesy Craig Polkinghorne

2 7/8" X 3" (73mm X 75mm)

 

 

(skirt inkstamp) NGK

                       JAPAN

 

 

Picture courtesy Bob Berry

2 7/8" X 3" (73mm X 75mm)

 

(skirt inkstamp)

                       MADE IN JAPAN

 

Picture courtesy Craig Polkinghorne

2 7/8" X 3" (72mm X 77mm)

 

 

(skirt inkstamp)

 

Picture courtesy Craig Polkinghorne

2 7/8" X 3" (72mm X 77mm)

 

(skirt inkstamp)

                         MADE IN JAPAN

 

Picture courtesy Craig Polkinghorne

 

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


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