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Collectibles--General (Modern)/Very odd shaped porcelain insulator pair


porcelain insulators
porcelain insulators  
Mr. Berry:
Great work you are doing on this website answering visitor questions.  I haven't seen these in awhile.  If you could explain their function, manufacturer if known, and current collectible value that would be great.   Thanks.

Thanks for your question and the nice feedback!  These are very cool pieces and are antenna tuning coil insulators -- they were used on transmitting stations on land and I believe have been used on some ships.  They are very collectible with a value of $125-$150 or so each if in good shape.  I'm not sure of the manufacturer if these - I also have a similar one.  They come in a smaller style as well.  These date from the 1920's into the early 1930s.  Here is a link to some more information:

         Hope this helps!  thanks -- Bob  

Collectibles--General (Modern)

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Bob Berry


Questions related to collecting Glass Insulators and porcelain insulators - I can provide historical information as well as current collector values. I am also interested in purchasing insulators I need for my collection.


I have collected since the early 1970's and have much historical information, as well as knowledge of current insulator values.

National Insulator Association (

BS & MS in Electrical Engineering

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