Interview with Paek Youngcha (6brothers.com) - Ask your Q!
Paek Youngcha is the selling manager of "6 brothers baduk" - the biggest company in Korea, producing Go equipment for more than 40 years. His ID on Ebay is "cyhy202"
Here you can ask any questions, related to Go boards, bowls, stones etc.
You can also send questions with photos to my email: firstname.lastname@example.org. For example, "I have an old goban at home. What kind of wood is it and what is the estimated price of this goban?"