Black matte Ray-Ban Wayfarer glasses with PK engraving

I lost my black matte Ray-Ban Wayfarer glasses yesterday around 3pm. I was at the Springfield Public Library on Main Street, grabbed a coffee at Daily Grind, and think I left them on a bench by the outdoor seating area. They're medium size with clear lenses. Inside the left temple there's an engraving 'PK,' and there's a tiny blue dot on the inside of the right temple. There's also a small scratch on the left lens from a minor bump last week. They were a gift from my grandmother and I really need them back.