Side wire groove - Double petticoat
Years produced: c.1930
Style (CD) scarcity: 2, Less then 10 known (2 Known)
Intended use: Telephone
Notes: Experimental style. Patented April 9, 1929 (Patent No. 1,708,038). Only Hemingray insulator that has the H in a square logo, the same logo as the bottles from that era.
|NO NAME||||(Dome) (H in a square) (Hemingray product)||SB||Aqua|
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