Hohner harmonica, key C, lost near Kimmel Center

I lost my Hohner Special 20 diatonic harmonica in key C yesterday around 3pm. It was tucked in a small black nylon case with a red sticker stamped with the initials 'M,' and the case has a tiny dent near the hinge from a drop last week. I last had it after busking outside the Kimmel Center on Broad Street, near Spruce Street in Center City Philadelphia, maybe near the bronze statue by City Hall. It means a lot to me—it was a gift from my dad and helped me through tough times, and I really need it back. If you found it, please drop it at the 15th Street Station Lost-and-Found or message me here; I can provide more identifying details.