Here's an unlisted porcelain insulator from the Netherlands (right in the photo). Stamped D.C.T.2 in green ink on the dome and SIMPLEX in green ink on the skirt. This is the same company that made the porcelain wire nuts! Measures 4 1/2" base x 3 1/2" tall. Excellent condition with a couple of light rust stains on reverse skirt.

First email gets this unlisted (in books and NIA website) porcelain insulator for only $60 shipped. Thanks!