Portion of a golf club head for a putter

FIG. 1 is a top view of a portion of a golf club head for a putter showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a heel view thereof;

FIG. 6 is a toe view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines immediately adjacent to the shaded area form unclaimed boundaries of the design. The broken line showing of the circular and oval regions within the shaded area and the remainder of the golf club head for a putter is for illustrative purposes only and forms no part of the claimed design.