FIG. 1 is a perspective view of a first embodiment of a front face of a retaining wall block according to my new design;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is a bottom plan view of FIG. 1;

FIG. 4 is a front elevational view of FIG. 1;

FIG. 5 is a rear elevational view of FIG. 1;

FIG. 6 is a right side elevational view of FIG. 1;

FIG. 7 is a left side elevational view of FIG. 1;

FIG. 8 is a perspective view of a second embodiment of a front face of a retaining wall block according to my new design;

FIG. 9 is a top plan view of FIG. 8;

FIG. 10 is a bottom plan view of FIG. 8;

FIG. 11 is a front elevational view of FIG. 8;

FIG. 12 is a rear elevational view of FIG. 8;

FIG. 13 is a right side elevational view of FIG. 8;

FIG. 14 is a left side elevational view of FIG. 8;

FIG. 15 is a perspective view of a third embodiment of a front face of a retaining wall block according to my new design;

FIG. 16 is a top plan view of FIG. 15;

FIG. 17 is a bottom plan view of FIG. 15;

FIG. 18 is a front elevational view of FIG. 15;

FIG. 19 is a rear elevational view of FIG. 15;

FIG. 20 is a right side elevational view of FIG. 15;

FIG. 21 is a left side elevational view of FIG. 15;

FIG. 22 is a perspective view of a fourth embodiment of a front face of a retaining wall block according to my new design;

FIG. 23 is a top plan view of FIG. 22;

FIG. 24 is a bottom plan view of FIG. 22;

FIG. 25 is a front elevational view of FIG. 22;

FIG. 26 is a rear elevational view of FIG. 22;

FIG. 27 is a right side elevational view of FIG. 22;

FIG. 28 is a left side elevational view of FIG. 22;

FIG. 29 is a top perspective view of the first embodiment of front face of a retaining wall block shown in an alternate environment;

FIG. 30 is a bottom perspective thereof;

FIG. 31 is a top perspective view of the first embodiment of front face of a retaining wall block shown in yet another alternate environment;

FIG. 32 is a bottom perspective thereof;

FIG. 33 is a top perspective view of the first embodiment of front face of a retaining wall block shown in yet another alternate environment;

FIG. 34 is a bottom perspective thereof;

FIG. 35 is top perspective view of a fifth embodiment of a front face of a retaining wall block according to my new design;

FIG. 36 is a bottom perspective thereof;

FIG. 37 is a top perspective view of the third embodiment of front face of a retaining wall block shown in an alternate environment;

FIG. 38 is a bottom perspective thereof;

FIG. 39 is a top perspective view of the third embodiment of front face of a retaining wall block shown in yet another alternate environment;

FIG. 40 is a bottom perspective thereof;

FIG. 41 is a top perspective view of the third embodiment of front face of a retaining wall block shown in yet another alternate environment;

FIG. 42 is a bottom perspective thereof;

FIG. 43 is top perspective view of a sixth embodiment of a front face of a retaining wall block according to my new design; and,

FIG. 44 is a bottom perspective thereof.

The broken lines in the drawings illustrate different embodiments of the structural environment of retaining wall blocks that include the front face of the design and are not a part of the design sought to be patented.