The ornamental design for a safe in the form of a brick, as shown and described.
FIG. 1 is a perspective view of a safe in the form of a brick, showing my new Design, in a used condition in a brick wall shown in broken lines;
FIG. 2 is an enlarged front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof;
FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image thereof;
FIG. 6 is an exploded perspective view thereof, illustrating a front cover of the safe removed; and,
FIG. 7 is another exploded perspective view thereof, with the front cover of the safe removed and the safe door in an open configuration.
The broken lines showing a brick wall in FIG. 1 and a locking mechanism in FIGS. 6 and 7 depict environmental matter and form no part of the claimed design.