Silver Yamaha flute with initials engraved on case

I lost my silver Yamaha flute yesterday around 3pm after rehearsal outside the Boulder Public Library on Canyon Boulevard, near the bike racks. It's a standard silver concert flute, about 26 inches long, in a black hard case that has a couple of tiny dents along the foot joint and a faint scratch near the lip plate. The case is engraved with my initials 'P.P.' and there's a small red fabric strap tied around the zipper. This flute has a lot of sentimental value and I’m really worried about it turning up; I’ve been playing since middle school and I just want it back.