Buckle

FIG. 1 is a front view of a buckle according to the design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front perspective view thereof;

FIG. 8 is a rear perspective view thereof; and,

FIG. 9 is a front view thereof shown in an opened position and in an environment of use.

The portions of the buckle shown in broken lines in FIGS. 1 - 9 do not form part of the claimed design. The broken line showing of the straps, belts, fabric, or material in FIG. 9 is for the purpose of illustrating portions of the environmental structure and forms no part of the claimed design.