Hemingray Insulator Profile: CD 137  
This doorknob-style insulator is a strong little chunk of glass. It was marketed as one of the "D"-series Lowex insulators, although none to date have been found with any Lowex embossings. The collecting hobby has aptly named this little guy the "hockey puck." 

Dimensions: 2 1/2" H x 3" W
Primary
Embossing:
HEMINGRAY
Years Produced:
c.1930s-1940s
Style Number:D-990
Rarity Scale (1-10): Common (3)
Usage: Secondary Power Distribution
Hobby Nickname: Hockey Puck
Known Embossings (4) Collapse
 
HEMINGRAY [005] (F-Skirt) HEMINGRAY SB < WANTED! 
HEMINGRAY [010] (F-Skirt) HEMINGRAY (R-Skirt) D-990 SB Photo
HEMINGRAY [020] (F-Skirt) HEMINGRAY [Numbers and dots] (R-Skirt) D-990 [Number] CB Photo
HEMINGRAY [030] (F-Skirt) HEMINGRAY [Number] (R-Skirt) D-990 SB Photo

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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