Vintage Waltham pocket watch, engraved initials, lost downtown Muncie

I lost my vintage Waltham pocket watch yesterday around 3pm. It's brass-tone, about 1.9 inches, with a glass cover and a slightly scratched face; the back is engraved with the initials 'A.J.P.' and there's a tiny dent on the edge. The attached chain is a slim silver tone, and I last had it while walking near the Madison Street bridge by the White River in downtown Muncie. This watch was a gift from my grandfather and means a lot to me—really hoping someone who finds it will return it.