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Insulators

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 of glass or pottery. There is a well-organized group of collectors with clubs and publications. CD numbers are Consolidated Design numbers, used by collectors to indicate shapes. 

Price Guide Listing for Insulators
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ImageCategoryPattern or ItemDescriptionYear PricedPrice
InsulatorsH.G. Co.Petticoat, Beehive, Purple, CS145, Illustrated2017Login / Create Account for Price
InsulatorsHemingrayMickey Mouse, Aqua, Milky Swirls Illustrated2017Login / Create Account for Price
InsulatorsPorcelainCooke’s Sleeve, England,1845 Illustrated2017Login / Create Account for Price
InsulatorsPatent Willington Glass Works, Mold Blown, 8-Sided, Olive Green, 5 1/2 In. Illustrated2015Login / Create Account for Price
InsulatorsThreadlessPilgrim Hat, Olive Black, 1860-72, 4 In. illustrated2014Login / Create Account for Price
InsulatorsPottery Harloe`s Pat./Mar 21, 99/Mar 12, 01/Dec. 0, 02, White, Glazed, 3 1/2 In., Illustrated2010Login / Create Account for Price
 InsulatorsCD 100Surge Glass, Embossed, Reg. U.S. Pat. Off., 2 3/4 In.2018Login / Create Account for Price
 InsulatorsCD 1003Block, Non-Tapering Wire Groove, Light Blue2018Login / Create Account for Price
 InsulatorsCD 102Diamond, Mustard Yellow,2018Login / Create Account for Price
 InsulatorsCD 1038Cutter, Pat Apr 26,4, Green,2018Login / Create Account for Price
 InsulatorsCD 106Hemingray, No. 9, Clear Glass2018Login / Create Account for Price
 InsulatorsCD 110.6National, Corkscrew, Blue Aqua2018Login / Create Account for Price
 InsulatorsCD 123EC & M Co. S.F., Green,2018Login / Create Account for Price
 InsulatorsCD 134No. 16, Pat Dec 19 1871, Yellow Olive Green2018Login / Create Account for Price
 InsulatorsCD 134Standard, Straw, Threadless2018Login / Create Account for Price
 InsulatorsCD 152Hemingray, No. 40, Green Glass2018Login / Create Account for Price
 InsulatorsCD 154Whitall Tatum, Deep Red Amber,2018Login / Create Account for Price
 InsulatorsCD 155Kerr, Clear With Cobalt Blue Splotch,2018Login / Create Account for Price
 InsulatorsCD 155.6Hemingray, Aqua ,2018Login / Create Account for Price
 InsulatorsCD 164Hemingray, No. 20, Blue Glass, Embossed,2018Login / Create Account for Price
 InsulatorsCD 228Brookfield, Deep Green Aqua,2018Login / Create Account for Price
 InsulatorsCD 242Hemingray, No. 66, Blue2018Login / Create Account for Price
 InsulatorsCD 247Ribbed Power, Blue Aqua,2018Login / Create Account for Price
 InsulatorsCD 265Fisher, Light Green,2018Login / Create Account for Price
 InsulatorsCD 268The Crown, Pat Allowed, Deep Aqua2018Login / Create Account for Price


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