Vintage Japan Double Ended Ceramic Egg Cup

adorable vintage double ended ceramic egg cup features a small end for average size eggs and a larger end for duck eggs maybe hand-painted with florals, and a dancing (?) couple marked Japan in good vintage condition with some minor flea bites along the rim of the larger cup end, no cracks or larger chips pictured with a marble egg of approx XL chicken egg size measures approx 3.5" tall, approx 2.5" opening (larger end), approx 1.75" opening (smaller end)