This is a Katakuchi glass by Kazumi Tsuji. It's a beautiful glass with very clear glass and small bubbles. It has a slightly thick and sturdy construction. Size: Top diameter: Approximately 7cm (approximately 7.5cm including the Katakuchi spout) Bottom diameter: Approximately 5cm Height: Approximately 10.5cm It has been displayed in a cabinet with a door and has been hardly used, so it is a very beautiful item without scratches, chips, or stains. I have taken care of it from time to time, but I haven't had a chance to use it, so I would like to sell it to someone who is looking for it. It is in very beautiful condition, but please understand that it is a used item before purchasing. Shipping may be changed to Rakuraku Mercari delivery. Thank you for your understanding.