CD 1066.1: France

5 1/4" X 4" (130mm X 101mm) (top skirt) FOLEMBRAY // No. 904 Picture courtesy Caleb Thimell

This is a spool insulator which is unthreaded and mounts in a holder with a pin through the center.  These were typically used to dead-end a power or communication line.  

This CD was assigned by N.R. Woodward and published in the October 1996 Crown Jewels of the Wire.

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