Prism embossed CD 113 "Hemingray No 12" with "Patent / May 2 1893" on rear. Tough to find these with amber, even tougher to find one with amber and in fantastic VNM condition!! Drips appear to be perfect. $75 plus shipping. All insulators are guaranteed. If you do not like, please just return for refund (less shipping). No Pay Pal.