This is an extremely limited edition putter numbered 13 of 20 pieces made to commemorate Tiger's 3rd consecutive U.S. Amateur victory in 1996 at Pumpkin Ridge in Oregon.
This Stainless Model is unquestionably one of the most coveted limited edition Tiger putters out there.
Most of these putters originally went to Japan and according to Bill Vogeney, there are probably only 2 or 3 of these currently in the US.