Pictured on page 59 of Irwin Valenta's Book, The Singular History of the Golf Tee, the G. and S. horizontal swinger tee is described as "the creme de la creme of spinners!"  And for good reason. 

The Brass upright supports a thick green rubber arm that is held in place with a round knurled and treaded nut, and all of these components are beautifully made.  When assembled, the brass upright pegs into the ground and the golf ball is placed on the end of the long, green arm.  The arm will spin when the golfer strikes the ball and the tee will never become lost. 

In mint condition and comes with its original box and packaging.