Blue ID badge with photo and lanyard

I lost my blue employee ID badge yesterday around 3pm near the Watertown Public Library on Oak Street, outside the main entrance by the bus stop. It's a laminated plastic badge with my photo, a TechSphere Solutions crest in the upper-left corner, and a blue woven lanyard. There's a coffee stain along the bottom edge and a tiny scratch on the corner, plus a sticky note on the back with my initials 'PK' and a work number scribbled. It's my key to getting into the building, and I really need it back so I don't get blocked at work.