Early imported glass from Japan- New stocks received from closed old hardware stores. This is an early water cup imported to Japan. The judgment should be made by this company "Sasaki Glass". Sasaki Glass was founded in 1902, and is a long-established glass company in Japan. The surface of this cup has a special physical and chemical effect, and it has the feeling of melting ice. Especially when the weather is hot, it has a cool visual effect.