This listing is for a rare vintage Silver Glow Smoothie saddle for a Schwinn Stingray. This was used on 1966 standard J38 Stingrays as well as some 65 and 66 3 speeds and maybe some others. You don't see these often because 1967 transitioned to ribbed saddles and they were only produced for a year plus.
This is not perfect but for a rider would be great. I have tried to show all the imperfections so please see the photos as they are the best description.