Hand-painted porcelain vase with koi fish

I lost my hand-painted porcelain vase yesterday around 3pm on Main Street in downtown Lewiston, near Riverfront Park. It's a 9-inch-tall white vase with cobalt blue koi swimming up the sides and a slim gold rim. The bottom is signed 'M. Ito,' and there's a tiny glaze nick on the rim from a previous bump. This piece is from a local artist and was a gift from my grandmother, so I’d really appreciate getting it back if someone found it.