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Pole Top Discoveries' Event #2404
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#3752 CD 126.3 X Aqua. 
- Sold Winning Bid: $70.00
- 4 Bid(s) View Bid History
- Lot # 3752
- System ID # 799073
- End Date
- Start Date
#3752 CD 126.3 X Aqua.
Oakman style threads.
This design is found with either embossed three "bars" or with an 'X," (like this unit). Both types are marked on the dome top.
Produced using Samuel Oakman's collapsible plunger (see patent drawings in second image). The collapsible plunger was devised for quick and easy removal from the insulator once molded. This particular insulator design happens to be the one shown in the drawings.
Oakman patented numerous inventions related to insulators and glassmaking over a period of several decades. Many of his insulator patents involved methods used in forming threads in glass.
A wide variety of insulator types were produced with this type of "Oakman threads," many made at the Lyndeborough Glass Works in Lyndeborough, New Hampshire. High quality glass with excellent clarity was manufactured, most often in aquamarine colored glass, but sometimes in exotic green and amber shades/tints.
Very near mint+ condition.