FIG. 1 is a front elevational view of a putter on which the putter head striking face embodying our new design is provided;

FIG. 2 is a fragmented enlarged front elevational view thereof;

FIG. 3 is a front perspective view of FIG. 1; and,

FIG. 4 is a top front perspective view of FIG. 1.

The portions shown by broken lines are for illustrative purposes only and form no part of the claimed design.