This one is from Algeria, probabmy manufactured in France by EIV. No embossing or other identifying markings. These were reportedly used for telegraph lines to a French Foreign Legion (Legion Etrangere) outpost in the Algerian desert. Just remember the many remakes of the movie "Beau Geste"... Just call this one a "lucky find".Only a few are known to exist in the USA.

Update 3/22/07: Apparently these were used for electric fences surrounding FFL outposts in the desert, check the August 2001 CJOW article here: (Thanks to Caleb for this information).

http://cjow.com/archive/article.php?month=8&a=08Foreign%20Insulators.htm&year=2001

So these are not quite as rare as was believed in 1993.