Blue enamel pin with Charleston map

I lost my blue enamel pin with a tiny Charleston map design yesterday around 3pm near the City Market on Market Street in Charleston, SC. It's about the size of a quarter, with a cobalt blue enamel field and a tiny gold palmetto tree in the center. It was pinned to the lapel of my denim jacket; the back shows a small dent near the clasp from brushing against a door. It has sentimental value—it's a gift from a friend who visited Charleston last year. If anyone found it, please drop me a line; I’d really appreciate getting it back.