It's not actually a "choko" (small sake cup) as it's not glazed on the inside. These are unused items that came wrapped in newspapers from the early Showa era (1926-1989). There is some variation in size among the five cups. The inside is not glazed, so please enjoy developing them to your liking. Taisho era (1912-1926) to early Showa era There are no scratches. Height: Approximately 4.3cm - 4.5cm Diameter: Approximately 4.8cm - 5.5cm There is variation in each cup.