The ornamental design for a leather stitching for container, as shown and described herein.
FIG. 1. Is a front perspective view of my leather stitching for container; with the dotted lines showing being for illustrative purposes only and to which no claim is made;
FIG. 2. Is a right side elevational view thereof with the left side being a mirror image thereof with the dotted lines showing being for illustrative purposes only and to which no claim is made;
FIG. 3. Is a top plan view thereof with the bottom being a mirror image thereof with the dotted lines showing being for illustrative purposes only and to which no claim is made; and,
FIG. 4. Is a front elevational view thereof with the back elevational view being a mirror image thereof with the dotted lines showing being for illustrative purposes only and to which no claim is made.