A lineman for the South Shore Interurban was selling his railroad stuff including insulators on January 31, 2015 in La Porte, IN. That was the same day as the Crown Point, IN swap meet for the Greater Chicago Insulator club and I ended up going to the auction. Line posts, multiparts, and large power pieces. The blue JD went for almost $100. I think the Pyrex piece had the smaller "foreign" top to it.