I'm not a porcelain expert, and even then, just going by glaze alone is not always possible. That color's typical of early Locke, New Lexington, maybe Trenton, maybe Pittsburg. But there are manufacturing qualities to look at, too... what's the pinhole like? Is this dry process or wet...
Saturday, September 16 - The Border States Bottle & Insulator Show. Held at the Douglas County Fairgrounds, 2120 Harper St. Bldg 21, Lawrence, KS 66046. 9:00 AM to 3:00 PM. The show includes antique Insulators, bottles, jars, postcards, telephones, advertising, porcelain signs, lightning rod...
There are odd factory glazes that turn up sometimes but they sure don't look like these. Everything in the photo appears to be colors applied afterward. The intent is not always to dupe someone into paying a lot of money. Some people just like using common insulators for craft projects to make...
Not rare, but far better than the ordinary common piece. One in good shape is about 20-30 dollars.
The one piece transposition patent covered this type of insulator that was capable of holding two wires. On a telephone line, parallel wires resulted in "cross-talk." The solution required...
Nice find! I don't see anything worth lots of money but that's a nice variety of styles, colors and ages. They'll look very nice cleaned up and on your shelf.
These were made by Brookfield for Thompson-Houston Electrical, formed in Lynn, Mass. in 1883. The company lasted until it merged with General Electric in 1892, so your insulator is probably from the late 1880s or early 1890s.
There is also insulators.info which has a ton of information. The Picture Poster section is the most active.
From the insulators.info site you can sign up for Insulator Collectors on the Net, also known as ICON. It's a listserv where many insulator collectors stay in touch. The daily digest...
Yup, the glass Brookfield pony is a CD 102. I'm not going to hazard a guess on U-numbers without actually seeing the insulator in person, because there are a lot of subtle variations. But generally, unmarked signals or cable tops in ordinary colors like white or brown are not going to be...
Yup, Eric's description is spot on.
These used to appear on power poles next to a transformer. Old-time linemen used to call them "widowmakers."
In this photo, the fuse cutouts are white, so they contrast with the rest of the rest of the insulators. You can see them mounted on the middle...
Cool. The ones on the left with the black crowns (for those unfamiliar, it's a coating to prevent the power lines from causing radio static) look like typical American production. The plain white ones on the right... hard to say, but they're similar to some German ones I've owned.
I hate to say this, but WFG tolls are not known in an authentic dark purple like that shade. I strongly suspect this one has been irradiated. Sadly, a lot of altered purples have been turning up on eBay over the past 10-15 years.
Best way to protect yourself is education! There are lots of...
That's a CD 121 toll. What you call fins are usually called "ribs" by collectors and they're a characteristic of Duquesne Glass Co. which produced insulators I think the 1890s or so in the Pittsburgh area.
They're unusual, but not rare.
It's a CD 162. GE sold insulators marked with the star. Probably made in Elmer, NJ. They turn up in a variety of green shades along with plain aqua. Usually aqua is a few dollars, and a green would sell for around 10-20, perhaps a bit more if it's a really vivid green color or an unusual shade...