FIG. 1 is a top, front and left side of the perspective view of a golf putter head showing our new design;

FIG. 2 is a top, rear and right side of the perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing of a fragmented shaft is for illustrative purposes only and forms no part of the claimed design.