U-1692: Uruguay

2 1/2" X 3 3/4" (61mm X 92mm)

 

(ear top inkstamp)  

{Maker unknown}

 

Picture courtesy Bob Scafe

2 3/4" X 3 7/8" (67mm X 95mm)

.

 

(ear top - inkstamp)  ECL

.

 

Picture courtesy Bob Scafe

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


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