Golf putter

A golf putter head includes a body having a side portion, the side portion having an aperture therein adapted to receive a shaft, a basal surface continuous with the side portion, and a semi-circular golf ball contacting face with a bore therein, the face having an appended portion distal to the aperture so as to define a major rotation axis and a minor rotation axis, the major and minor axes defining an angle therebetween beta of between 90° and 100° wherein the major axis defines an angle alpha of between 10° and 25° relative to the normal vector extending from the basal surface through the center of rotation. An insert is adapted to be received within the contacting face bore in order to modify the head putting performance characteristics.