FIG. 1 is a top view of a first embodiment of a front panel of a banknote handler showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an isometric view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view of a second embodiment of a front panel of a banknote handler showing our new design;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front view thereof;

FIG. 10 is an isometric view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top view of a third embodiment of a front panel of a banknote handler showing our new design;

FIG. 14 is a bottom view thereof;

FIG. 15 is a front view thereof;

FIG. 16 is an isometric view thereof;

FIG. 17 is a left side view thereof;

FIG. 18 is a right side view thereof;

FIG. 19 is a top view of a fourth embodiment of a front panel of a banknote handler showing our new design;

FIG. 20 is a bottom view thereof;

FIG. 21 is a front view thereof;

FIG. 22 is an isometric view thereof;

FIG. 23 is a left side view thereof;

FIG. 24 is a right side view thereof;

FIG. 25 is a top view of a fifth embodiment of a front panel of a banknote handler showing our new design;

FIG. 26 is a bottom view thereof;

FIG. 27 is a front view thereof;

FIG. 28 is an isometric view thereof;

FIG. 29 is a left side view thereof;

FIG. 30 is a right side view thereof;

FIG. 31 is a top view of a sixth embodiment of a front panel of a banknote handler showing our new design;

FIG. 32 is a bottom view thereof;

FIG. 33 is a front view thereof;

FIG. 34 is an isometric view thereof;

FIG. 35 is a left side view thereof; and,

FIG. 36 is a right side view thereof.

The broken line showing of a banknote handler is included for the purpose of illustrating only and forms no part of the claimed design. The dashed-dot-dashed lines define the boundaries of the claimed design.