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Pole Top Discoveries' Event #2403 Closed February 26.
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#1526 CD 110.5 NAT. INSULATOR CO. "Small Corkscrew" Blue aqua. 
- Sold Winning Bid: $130.00
- 11 Bid(s) View Bid History
- Lot # 1526
- System ID # 436866
- End Date
- Start Date
#1526 CD 110.5 NAT. INSULATOR CO. (Four patent dates on base). Blue aqua.
The "corkscrew" insulator is quite unusual! The spiral corkscrew top was was designed to accept a horseshoe shaped clip, which eliminated the need for a tie wire.
Most examples of this uniquely shaped insulator were recovered along the route of a long distance telephone line constructed by American Telephone & Telegraph Company between New York City and Philadelphia, Pennsylvania.
A beauty that remains very near mint! Base embossing is fully intact with no flakes of chips.