Bizen-yaki (Bizen pottery) This is a guinomi (sake cup) by Masamine Kakumi. It was found while sorting through my grandfather's belongings. I believe it's approximately 40-50 years old. It's unknown whether it was used, but it came in a wooden box. According to Bizen Tourakuen, a Bizen-yaki specialty store in Okayama Prefecture, they sell similar items for 26,000 yen. I'm willing to sell it to anyone interested. Thank you for your understanding. Thank you for looking.