Hemingray Dots

CD 315-334

One piece - Large power styles


CD 317.5

CD 317.5

Size: 114mm x 127mm (4.5" x5")

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Years produced: c.1877-1880s
Style (CD) scarcity: 3, 11-50 known
Intended use: Lightning Rod System
Notes: One of four styles of Chambers lightning rod insulators. CD 124.5, CD 132.4, CD 317 and CD 317.5. Patented August 14, 1877 (Patent No. 194,220)

Primary EmbossingEINEmbossingBaseColor
CHAMBERS[010](F-Center) CHAMBERS/PAT AUG 14 1877 (R-Center) PATENT/DEC. 19. 1871SBGreen Aqua
CHAMBERS[010](F-Center) CHAMBERS/PAT AUG 14 1877 (R-Center) PATENT/DEC. 19. 1871SBIce Green
CHAMBERS[010](F-Center) CHAMBERS/PAT AUG 14 1877 (R-Center) PATENT/DEC. 19. 1871SBLight Aqua

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