N-TBD: United States (USA)

3 3/4" X 5 1/8" (95mm X 130mm)

 

(base around pinhole) THE GEAD POLE TOP #1

THE JOHN PRATT CO. / HARTFORD CONN

PATD SEP "illigible"

 

Picture courtesy Nicholas Rose

This is a feeder cable insulator made with cast iron over a composition base.


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