CD 147 glass insulator embossed only with PATENTED. This is the harder to find embossing variant EIN 020. It's in great condition with the only issue being a bb hit or inclusion pop on the skirt to the left of the embossing. I have a photo of this, just ask me for it. Asking $120 which includes shipping to anywhere in the lower 48. Payment via PayPal or Zelle or personal check. Thanks for looking.