Insulator Profile: CD 230  
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This style is nicknamed "frog eyes" by collectors and is the smallest in the D-500 series of insulators produced by Hemingray starting in the 1930s.

Primary Embossings:
HEMINGRAY
LOWEX
NO NAME
Dates Produced:
c.1930s-1940s
Style Numbers:512, D-512
Usage: Primary Power Distribution

3" H x 4" W
Embossings
Primary Emb. [?] EIN [?] Embossing [?] Base [?] Photo
HEMINGRAY [010] (F-Skirt) HEMINGRAY (R-Skirt) 512/[Number]-MADE IN U.S.A.-[Number and dots] CB
HEMINGRAY [020] (F-Skirt) HEMINGRAY (R-Skirt) 512/[Number]-MADE IN U.S.A.-[Number and dots] SB
HEMINGRAY [030] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) D-512 SB WANTED!
HEMINGRAY [050] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) [Number]/D-512 SB
HEMINGRAY [060] (F-Skirt) [Numbers and dots]/HEMINGRAY/MADE IN U.S.A. (R-Skirt) D-512 SB WANTED!
HEMINGRAY [070] (F-Skirt) [Numbers and dots]/HEMINGRAY/MADE IN U.S.A. (R-Skirt) LOWEX/D-512 SB WANTED!
HEMINGRAY [080] (F-Skirt) [Numbers and dots]/HEMINGRAY/MADE IN U.S.A. (R-Skirt) LOWEX/D-512/REG. U.S. PAT. OFF. SB WANTED!
HEMINGRAY [090] (F-Skirt) [Numbers and dots]/HEMINGRAY/MADE IN U.S.A. (R-Skirt) [Number]/D-512 SB
LOWEX [010] (F-Skirt) LOWEX/REG. U.S. PAT. OFF. (R-Skirt) 512/[Number]-MADE IN U.S.A.-[Number] SB
NO NAME [010] (F-Skirt) 512/[Number]-MADE IN U.S.A.-[Numbers and dots] {Hemingray product} SB


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