This appears to be a ceramic piece called "Kizeto Katakuchi." "Katakuchi" is a general term for vessels that have a spout on one side. It can be used not only as a sake vessel but also on the dining table for tea, dressings, noodle broth, and more. It's also perfect for serving soy sauce for sashimi or dipping sauces. It seems that many are handmade, one-of-a-kind items. As it is an old item, there are some minor scratches. Please understand. Thank you for viewing.