U-2821A: Taiwan

4" X 5 1/2" (101mm X 140mm)

 

(skirt inkstamp)

                         54

{Maker unknown}

 

Picture courtesy Bob Berry

4" X 5 1/2" (101mm X 140mm)

 

(skirt inkstamp)

                         54

{Maker unknown}

 

Picture courtesy Bob Berry

Note the base is turned in to make a fog type insulator.

U number assignment by Bob Berry May 2016.


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