Portable cash box

FIG. 1 is a perspective view of a portable cash box showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof with a lid and a front wall of the cash box being shown in an open position; and,

FIG. 8 is a perspective view thereof with a currency tray being lifted away from the lid thereof.

The handle shown in FIGS. 1-5, 7 and 8 forms no part of the claimed design. The coinage and currency illustrated in FIGS. 7 and 8 merely shows the usage of the portable cash box of the present invention and forms no part of the claimed design.