CD 134 ELECTRICAL SUPPLY CO Embossed on the (F-Skirt) THE ELECTRICAL SUPPLY CO / CHICAGO Mold line over the dome it has a couple of dings to the upper wire groove rim, it also has a beautiful Amber thread in the Left lower skirt as you can see in the photo. This insulator is not easily found.--- $ 65.00--- Plus postage. We ship to USA and Canada… Buy with confidence! … We do not sell altered insulators! PayPal, Money Order, or Cashier's Check. Check our other insulators to combine freight.