Splash Bowl

This bowl has no markings or designs. I'm wondering where was it made, when was it made and who made it. There was a tag under the lid when I first purchased it but it didn't have any info about the piece. It looks handmade and it's colors are vibrant on the inside the bowl but inside the lid looks a dull, charcoal color, but outside the lid shines. The knob on the lid shows signs of handmade but I'm no professional. Any info or opinion is appreciated.