NOS AC Cobra Original Enots 3.5" Aston Roller Fuel filler cap.Stamped on the brass ring inside the cap it reads ENOTS Made In England Benton&Stone LTD Birmingham .This unit is around 45 years old,it still has a waxy coating all over the cap.This is a concours cap for someone doing a restoration on a Cobra Shelby Mustang etc.I have it on ebay 230083877576
This cap also came on the 289 FIA Cobras and factory race cars.