Embossed on the (Base) AM INS (backward R) Co PATD SEPT .13. ' 81 All of the embossing is present and very readable. This style of insulator has always been prone to damage But The only thing wrong with this one is a very small flake at the bottom of the skirt and a small light scratch above that. The color is light green---$35.00--- Buy with confidence! … We do not sell altered insulators! Buyer to pay all shipping and insurance costs (U.S.A. and Canadian shipping only). PayPal, Money Order, or Cashier's Check. Heck, we will even take your personal check if we know you.!!! Don't wait for a sale it's not going to happen.