FIG. 1 is a perspective view of a belt buckle, showing a first embodiment of my new design;
FIG. 2 is a front elevational view of FIG. 1;
FIG. 3 is a rear elevational view of FIG. 1;
FIG. 4 is a left-side elevational view of FIG. 1;
FIG. 5 is a right-side elevational view of FIG. 1;
FIG. 6 is a top plan view of FIG. 1;
FIG. 7 is a bottom plan view of FIG. 1;
FIG. 8 is a perspective view of a second embodiment thereof;
FIG. 9 is a front elevational view of FIG. 8;
FIG. 10 is a rear elevational view of FIG. 8;
FIG. 11 is a left-side elevational view of FIG. 8;
FIG. 12 is a right-side elevational view of FIG. 8;
FIG. 13 is a top plan view of FIG. 8; and,
FIG. 14 is a bottom plan view of FIG. 8.
The broken lines showing letters in the figures depict portions of the belt buckle that form no part of the claimed design.