Black Yamaha violin with sticker 'E.R.'

I lost my black Yamaha violin yesterday around 3pm after a quick busking session near the Dahl Arts Center on Main Street in downtown Rapid City. It's a full-size instrument with a glossy ebony fingerboard, a natural wood chin rest, and a few light scratches along the lower bout; the fine tuner on the E string is shiny, and the tailpiece has a tiny dent. Inside the f-hole there’s a white sticker with my initials 'E.R.' and a faint stamp from RC Music School. This violin was a gift from my grandmother and has tons of sentimental value, which is why I’m really hoping someone who found it will reach out so I can get it back.