Safe

FIG. 1 is a front perspective view of a safe according to my new design; FIG. 2 is a left side elevation view thereof; FIG. 3 is a right side elevation view thereof; FIG. 4 is a front elevation view thereof; FIG. 5 is a rear elevation view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; and, FIG. 8 is a front perspective view thereof, with a door in an open position. The broken lines in the drawing depict portions of the safe that form no part of the claimed design.