Circa 1920s Kraeuter Patent center shafted "Pendulum Putter." The patent was obtained by Arthur Kraeuter in 1921, but this putter must predate 1921, as it is stamped "Patent Applied For." Stamped by Kroydon Golf Clubs on the head. Also contains hand stamped initials FBS, which is likely the initials of the original owner. Very good condition.