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CD 309.5 [010]
(Example)
10" H ×
7 1/2" W

This insulator is on my wanted list!

If you have a matching insulator with the exact embossing shown below and would like to sell it, please take photos of your insulator, fill out the form below, and I will be in touch with you shortly. Thanks!
Design ID:The Design ID is the identification number for this insulator design.

CD = Consolidated Design
SI = Special Issue
BT = Bushing & Tube
UD = Unlisted Design
 CD 309.5
Primary Embossing:The Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
 WESTINGHOUSE
EIN:The Embossing Index Number (EIN) is a unique number assigned by the collecting hobby to each distinct embossing for an insulator design. It is normally shown in brackets, e.g. [050].
 [010]
Embossing:Most common terms:
(F-Skirt): Front Skirt
(R-Skirt): Rear Skirt
/: New line of embossing
{}: Special note (not embossed on the insulator)
[#]: Represents a number

Other terms:
{MLOB}: Mold Line Over Base
(F-Crown): Front Crown
(R-Crown): Rear Crown
(F-Umbrella): Front Umbrella
(R-Umbrella): Rear Umbrella
 (F-Skirt) WESTINGHOUSE ELECTRIC & M'F'G CO./PITTSBURG, PA. (R-Skirt) "TELLURIDE" TYPE B.
Base Type:The base is the bottom of the insulator. Hemingray made 4 different types of bases:

1. SDP: Sharp Drip Points
2. RDP: Round Drip Points
3. CB: Corrugated Base
4. SB: Smooth Base
 SB

Upload Photos (Required):
















Insulator Photography Tips

To ensure I can tell which insulator you have, please try to follow these 3 tips:

  1. Insulator should be in-focus. If your photos are turning out blurry, try moving the camera slightly further away from the insulator, or see if your camera has a macro (closeup) mode. Some cameras also allow for manual focus.
  2. Take the photo straight-on. Bringing the camera down to eye level with the insulator (rather than up above, or bird's eye view) is helpful for me to read the embossing.
  3. Please photograph the entire insulator. It's more helpful to me if you show the entire insulator, rather than a small portion of it. If there's a special detail or other feature you feel is important, you can use the third photo upload field titled "Embossing/Feature Detail".