Hemingray Insulator Profile: CD 301.5  
This rare triple petticoat power piece is the largest size in the Hemingray 510 series. There are only a few examples of these known in each color (clear and amber) and all specimens appear to have been dug from the Hemingray dump, so they never saw service. 

Dimensions: 4 5/8" H x 7 1/4" W
Primary
Embossing:
HEMINGRAY
Years Produced:
1939-1940
Style Number:515
Rarity Scale (1-10): Very Rare (8)
Usage: High Voltage
Known Embossings (3) Collapse
 
HEMINGRAY [010] (F-Skirt) HEMINGRAY - 515 (R-Skirt) MADE IN U.S.A./[Numbers and dots] {1 3/8" pinhole} SB  
HEMINGRAY [020] (F-Skirt) HEMINGRAY - 515/[Number] (R-Skirt) MADE IN U.S.A./[Number] {1 3/8" pinhole} SB  
HEMINGRAY [030] (F-Skirt) HEMINGRAY-515/[Number] (R-Skirt) MADE IN U.S.A./[Number] {1" pinhole} 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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