That have worked with us since I started this business.
27cms, 24cms, 21cms and 18cms in diameter ( Bottom to top ). They are what we call "Han-Zundoh nabe". Han for it means "middle" or "semi-something". Zundoh means cylindrical. Nabe means pan/s or pot/s. A zundoh nabe is deeper then them. They seem to have something like imbricate pattern at their surfaces because I thought it might have helped not to have any uncomfortable noise when some iron stuff e.g. spoons and themselves touched each other. Nowadays I seldom find that kind of pans in markets, wonder if they are still available or not.