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Topic: Dating Electric Fixture from a UL IBEW Labels

User: MaksyMR, Location: San Jose, CA

Asked on: Tuesday, April 29, 2025 at 8:31 pm EDT
Answered on: Tuesday, April 29, 2025 at 8:35 pm EDT

Question: Howdy. I was wondering if anyone could help me date and state the manufacturer of this old electric fixture. The label is brown with a Black outline.At the top, it is written Underwriters' Laboratories Inc. Listed. The UL Issue is C-72425.At the bottom of the label, there is the IBEW logo with Made in the U.S.A right under it. On the right side of the IBEW logo, the serial number E·12399-4 is visible.Thanks.

Okay, let's break down the information on that label to try and narrow down the date and manufacturer.

Dating the Fixture



Underwriters Laboratories (UL) Listing

While UL is still around today, the style of the UL label is key. A brown label with a black outline is generally indicative of labels prior to the mid-1970s.


UL Issue Number

The UL Issue number (C-72425) is the most direct clue to dating this fixture. However, UL Issue numbers are

not
publicly searchable for date ranges. You would need to contact UL directly or find resources that may have maintained historical Issue number records, which are rare. I recommend you try to contact UL. IBEW Logo and "Made in the U.S.A."

The presence of the IBEW (International Brotherhood of Electrical Workers) logo and "Made in the U.S.A." indicate that it was made by a unionized manufacturer. While helpful, it doesn't definitively pinpoint the date.


Serial Number Format

Serial numbers are proprietary to the manufacturer. The E- prefix and the general format of the number could be a clue, but would need to be checked against known manufacturers.

Estimating a Date Range

Given the brown label with black outline, the UL listing, and the other elements, a broad estimate would be somewhere in the range of

the 1950s through the early 1970s.
Identifying the Manufacturer

The label itself doesn't give you the manufacturer's name. Here are a few ways you might be able to find it:1.

Searching for UL issue #

Try and search that issue number online to see if anyone has posted about it.2.

Look for Identifying Marks on the Fixture Itself

Carefully examine the metal, glass, or plastic parts of the fixture. Manufacturers often stamped or molded their name, logo, or a patent number into the fixture components. Use a magnifying glass and good lighting.3.

Compare to Existing Known Fixtures

Search online or in antique lighting books to see if you can find a similar fixture that is already identified. Details like the style, materials, and construction techniques will help you narrow it down.4.

IBEW Connection

Contact the IBEW. They may have historical records of manufacturers that were unionized and could potentially link the label to a specific company. While they may not have access to that kind of information, it's worth a shot.5.

Antique Lighting Experts/Forums

There are antique lighting collectors and experts who specialize in identifying vintage fixtures. Search for online forums or groups dedicated to antique lighting and post pictures and details of your fixture.

Without additional information (manufacturer markings, style of the fixture, etc.) it is difficult to date it definitively and provide a name.


Provide photos of the whole fixture, the label, and any other details that are visible and I can try to help you identify more. Flag for review

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