Black Anker PowerCore 10000 with blue sleeve

I lost my black Anker PowerCore 10000 portable charger yesterday around 3pm. I was in Cambridge's Market Square, just outside the Grand Arcade on Market Street, after grabbing a coffee. It’s palm-sized, matte black, and sits in a blue silicone sleeve. On the back there’s a small white sticker with the initials 'PR' and a tiny dent in the bottom edge from a fall last month. It still charges fine, but I rely on it every day for lectures, so it has sentimental value and I really need it back. If someone found it, I’d be grateful to hear from you.