Abstract: A putter head for a golf putter is provided. The putter head comprises a body and insert. The body comprises a base; a face portion having a ball-facing surface with a non-zero first loft angle A; a window framed by the ball-facing surface and extending through the face portion; and an open-topped dock extending into the base rearwardly from the window. The insert is removably affixable to the body. The insert comprises: an insert body having a ball strike face with a second loft angle in the range of: 0 to A; and a foot extending rearwardly from the insert body. The foot is dimensioned to be inserted through the window and seated in the open-topped dock. The insert body is dimensioned to be received by and seated within the window.