We claim the ornamental design for a tin purse, as shown and described.
FIG. 1 illustrates a front view of a tin purse of the present invention;
FIG. 2 illustrates a top view of the tin purse of the present invention;
FIG. 3 illustrates a right side view of the tin purse of the present invention, the left side view thereof being a mirror image of the right side view;
FIG. 4 illustrates a rear view of the tin purse of the present invention; and,
FIG. 5 illustrates a bottom view of the tin purse of the present invention.
The broken lines of FIGS. 1–5 are for illustrative purposes only and form no part of the claimed design.