Vintage Ceramic Frog Figural Bank Figurine marked Japan

This is a whimsical vintage ceramic figural bank in the form of a lounging frog. It's dimensions are about six and half inches across, and three and half inches tall, and it is marked Japan. It probably dates to the 1960s. It has fine crazing, is missing its rubber stopper, and has some bumps on the glaze, but it is undamaged, with no chips, cracks, or hairlines.