Armstrong Straight Edge Glass Insulator


The Armstrong Straight Edge glass insulator would be perfect for your vintage décor or as a collector piece. These are in excellent used condition with no chips and ready to be used as bird feeders, candle holders, the start to a great light fixture, a paper weight (wrap wire around the top to make a photo clip), book ends or whatever else you can repurpose these for. See how I repurposed the glass insulator into a centerpiece!

2 in stock

A little history about The

Armstrong Straight Edge Glass Insulator

Whitall Tatum entered the insulator manufacturing market in 1922, mass-producing insulators for use on power and communications lines across the country. Armstrong Cork Corporation purchased Whitall-Tatum in 1938, continuing insulator production under the Armstrong trademark. This Armstrong Straight Edge glass insulator was a basic part of the communications and power industry in the early 20th century and now serves as décor in our homes.

  • Dimensions: 4 1/4″” H × 3 5/8″ W
  • Color: Clear
  • CD 155
  • A note about the CD Number: CD stands for Consolidated Design number. This is a numbering system developed and used by the insulator collecting hobbyist to identify and differentiate between the hundreds of different insulator styles. These numbers do not appear anywhere on the insulators themselves.
Armstrong Straight Edge Glass Insulator CD 155
Ready to feather your nest with the

Armstrong Straight Edge Glass Insulator?

Armstrong Straight Edge Glass Insulator CD 155

Frequently Asked Questions About The Armstrong Straight Edge Glass Insulator

These are vintage pieces and each one is unique. If there are any chips or stains that will be indicated in the description.

The size of the insulator is approximately 4 1/4″” H × 3 5/8″ W and the color is clear. The front skirt shows: Made In U.S.A, 5-68 and the rear skirt shows: Armstrong DP 1.

Vintage and Antique items are pre-owned items that may have some wear and tear. Sizes are approximate. Our opinion regarding era, age, genre, style, material, color, condition, origin, history, etc., may differ from yours and is offered without guarantee. Please read the entire product description as we do not offer refunds on purchases. Contact Kristin at The Fifth Sparrow No More if you have any questions.

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I’m ready to feather my nest with Armstrong Straight Edge Glass Insulator!

Additional information

Weight 24.1 oz
Dimensions 3 × 3 × 4 in


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