I was contacted by a man who is working with his mother's estate that has a few insulators. He is interested in finding a collector who is interested. There are six pieces -- a milkglass Maydwell, a red stained CD 155 and four interesting metal insulator copies likely made by sand casting. Two appear to be aluminum and two brass -- although not technically insulators I think these are pretty cool! He says they are threaded. Anyone interested - please contact Guy at guy@prostarsports.net.