Found a handmade blue and white ceramic coffee mug with a swirl design near the park in East Idaho.

I found a beautiful blue and white ceramic coffee mug near the park in East Idaho yesterday. It looks like it's been handmade and has a little swirl design on it. I stumbled upon it while walking my dog and didn't see anyone around to claim it, so I brought it home. If this mug belongs to you, please describe any unique features or patterns it has!