This is likely a glass tokkuri (sake bottle) made in the Showa era. Its origin is unknown, but it is probably Japanese. It has a substantial weight and thickness, with a natural and beautiful curved form. The color of the bottom is a khaki-yellow hue, giving it a unique charm. Height: 12.5cm Bottom diameter: 8cm Mouth diameter: 5.5cm I purchased it in antique condition and have used it several times. Thank you. Studio Pepra