Gray Akai MPK Mini MIDI controller

I found a compact gray AKAI MPK Mini MIDI controller this afternoon around 3:15pm in the parking lot behind the McMorran Place on McMorran Boulevard in downtown Port Huron. It's in decent shape, with a few light scratches on the top panel and a small blue sticker with the initials 'AO' on the back. It has 25 velocity-sensitive keys, and the knobs feel a bit stiff but work. The sleeve is a black nylon case with a zipper that has started to wear. I powered it on and loaded a few presets to check it, and everything lit up fine. If this is your gear, tell me the exact model and the serial number if possible, or describe the sticker on the back, and we can arrange a meetup to return it. Happy to help you get back to making music.