CDS 188 Brown Pony Duplex Insulator - this is the largest of the two styles of Browns. It is a glass piece. Green with super amber. I had a collection of about 150 Browns. This is certainly one of the top pieces form that collection. Most CD 188s are aqua. Has a nice base, The top where the pin would thread in has a chip at the top of the threaded area. Reduced to sell. $150 shipped within the Continental US. PayPal or personal check. Check out my other ICON listings - search Jim White / For Sale