That would be the S-1A version with the sheeted wing. Not legal for Old Time Stunt but I felt it flew better than the S-1 OTS version. I've had several and still have an S-1A with the venerable Fox 35 Stunt engine. Still one of my favorite combos to fly.

BTW, my first CL kit was a [link=http://home.comcast.net/~steve.scott8/images/ringmstr.jpg]Ringmaster[/link] powered by a McCoy Redhead .35 engine. I got the kit for Christmas when I was age 13 and built the kit, covered, finished and flew it successfully.

If you go to the photo link and are wondering what that mountain in the background is... That would be Mt. Aryat on Luzon Island, Republic of the Philippines. The building is the USAF hospital at Clark AB, where my old man was stationed in the mid 1960s.