FIG. 1 is a top left front perspective view of a combined watch and key case showing my new design in an open position;

FIG. 2 is a top and left-front perspective view thereof in a closed position;

FIG. 3 is a right side elevational view of FIG. 2;

FIG. 4 is a rear elevational view of FIG. 2; and,

FIG. 5 is a bottom plan view of FIG. 2.

The broken lines of FIGS. 1-5 are environmental only and form no part of the claimed design.