I bought this in Amami Oshima. It's almost unused. A case is also included. The case cost around 10,000 yen. This is authentic, so it's a great deal. Someone commented that it might be synthetic leather! I bought it from a shamisen shop in Amami Oshima, so I don't know the details! I've only used it two or three times, and the purchase price, including the case, was just under 50,000 yen, so I'm offering a slight discount and including shipping! I don't know much about it, and I can't play it, so please tune it yourself. Thank you! Final price reduction! A bachi (plectrum) and spare strings are also included! I will give them as a present exclusively to the buyer.