U-1941A: England

3 1/4" X 4 3/4" (79mm X 116mm)

 

(front skirt) 19 61 / MADE IN ENGLAND

 (rear skirt) GPO                                                     

(cap top)   HMB 63 GPO "in a circle"                    

{Bullers}

 

Picture courtesy Bob Scafe

This is a dryspot insulator where the top unscrews to expose openings inside the skirt to allow a telephone drop wire to pass through the insulator to provide a "dry spot" from rain and decrease leakage loss.  

U number assignment by Bob Berry April 2016.

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