U-1710: Russia

2 7/8" X 4" (73mm X 102mm)

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 (dome incuse) CK in an oval // 1975

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Picture courtesy Don Briel

3" X 4 3/8" (74mm X 108mm)

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 (dome incuse) "backwards J"

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Picture courtesy Don Briel

3 1/8" X 4 3/8" (80mm X 110mm)

 

 (dome incuse) 02

                 1948

{Pervomayskiy}

 

Picture courtesy George Sukhoff

3 1/8" X 4 3/8" (80mm X 110mm)

 

 (dome incuse) 1947

                      

{Maker unknown}

 

Picture courtesy Bob Berry

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


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