Hemingray Insulator Profile: CD 1025  
This experimental mine insulator style made by Hemingray was recently discovered and assigned the CD number 1025. It has a unique slot in one end of the pinhole, making it remarkably similar to this patent. It also bears the words "Patent Applied For" both above and below the wire groove... guess they really wanted to make sure people knew! 

Dimensions: 3 1/2" H x 3 1/2" W
Years Produced:
Rarity Scale (1-10): Extremely Rare (9)
Known Embossing Collapse
PATENT APPLIED FOR [010] (F-Above wire groove) PATENT/APPLIED FOR (F-Below wire groove) PATENT/APPLIED FOR {Hemingray product} SB < WANTED! 

The following embossings were removed from the price guide because they could not be verified to exist:

Unverified Embossings
Year Removed

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Insulator photo courtesy of Bill Meier from www.insulators.info and used with permission.

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