This is a Go set, including a Go board and stones, that I found in my home's closet. My father bought it in December 1998, and I believe it is almost unused. The instruction manual (which has some insect damage) mentions "Clam shell" and "Nachiguro" (a type of stone), and "〇・Natural Wood." The Go board weighs approximately 16 kilograms and is 17.5 centimeters thick. It's been almost 30 years, and there is some age-related staining on the sides and part of the playing surface of the board, as well as on the clam shell stones, but overall, it is in good condition. I have confirmed that there are 182 black stones and 181 white stones. Thank you for looking.