Here I am offering a nice and tough to find large Italian J ball insulator. I believe these are Pyrex and embossing on the top is HT92 UNEL 38111.The colour is light golden straw. These seem to be fairly uncommon to find and are not listed in the GIFONA book. Very easily damaged insulators and this one has a small clamshell chiplet on one edge, a larger clamshell chip on one corner end and a tiny micro flakelet on one corner tip. No cracks. Displays great and collage shows damaged areas. $70 + shipping.