The ornamental design for a watchcase, as shown and described.
FIG. 1 illustrates a perspective view of a watch case employing an ornamental design in accordance with the present invention;
FIG. 2 illustrates a front view of the watch case of FIG. 1;
FIG. 3 illustrates a rear view of the watch case of FIG. 1;
FIG. 4 illustrates a left side view of the watch case of FIG. 1;
FIG. 5 illustrates a right side view of the watch case of FIG. 1;
FIG. 6 illustrates a top view of the watch case of FIG. 1; and,
FIG. 7 illustrates a bottom view of the watch case of FIG. 1.
The structural features depicted with broken lines in FIGS. 1 and 2 have been shown for the purpose of illustrating portions of the watch case that form no part of the claimed design.