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Insulators |
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Insulators of glass or pottery have been made for use on telegraph or telephone poles since 1844. Thousands of different styles of insulators have been made. Most common are those of clear or aqua glass; most desirable are the threadless types made from 1850 to 1870. Most insulators are made for glass or pottery. There is a well-organized group of collectors with clubs and publications.
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| Image | Category | Pattern or Item | Description | Year Priced | | | Insulators | Patent | No. 20, Pleated Skirt, Leaner, | 2011 | | | Insulators | Pond Style | Wooden, Zinc Cap, Wire Groove, | 2011 | | | Insulators | San Francisco | Round Top, Lignum Vitae Wood,, | 2011 | | | Insulators | So. Ex. Co. | No. 010, Embossing, Aqua, | 2011 | | | Insulators | Star | 5-Pointed | 2011 | | | Insulators | Star | No. 10, Bright Blue,, | 2011 | | | Insulators | Tillotson & Co. | No. 020, Light Aqua, 1864-65, | 2011 | | | Insulators | U-394 | Brown, Porcelain,, | 2011 | | | Insulators | U-970 | Porcelain, Threadless Egg, Tan, | 2011 | | | Insulators | U-981 | Elliot Pilgrim Hat, White, Porcelain, | 2011 | | | Insulators | W.E. Mfg. Co. | Continuous Drip 126.4, Pat. Dec. 19, 1871, Concave Mold, Blue | 2011 | | | Insulators | W.F.G. | No. 10, Steel Blue, Graphite Steam, | 2011 | | | Insulators | Withycombe | Grooved, Light Amethyst,, | 2011 |  | Insulators | Pottery | Harloe`s Pat./Mar 21, 99/Mar 12, 01/Dec. 0, 02, White, Glazed, 3 1/2 In., Illustrated | 2010 | | | Insulators | E.C. & M. Co. | S.F., Teal Blue, White Dot, 4 1/4 In. | 2010 | | | Insulators | Star | Side Wire Groove, Single Petticoat, Smooth Base, Aqua, | 2010 | | | Insulators | AM Insulator Co. | N.Y., Double Petticoat, Pat’d Sept. 131881, Nov. 131883, Green | 2009 | | | Insulators | AM. Tel. & Tel. | No. 100, Jade Green, Milk Glass | 2009 | | | Insulators | American | No. 020, Aqua, Milky Swirls | 2009 | | | Insulators | American | No. 020, Backwards R, Aqua | 2009 | | | Insulators | Armstrong | No. 030, Cobalt Blue, Red, Milky Base | 2009 | | | Insulators | B.T. Co. Of Can. | No. 080, Royal Purple, | 2009 | | | Insulators | Brookfield | Aqua, 3-Piece Mold, Embossed Dome | 2009 | | | Insulators | Brookfield | Embossing, Aqua, | 2009 | | | Insulators | Brookfield | No. 010, Dark Aqua, | 2009 |
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