This is a sake masu (wooden measuring cup) commemorating the 1500th installment of the "Sake no Hosomichi" series, with a branded design on all four sides. It has never been taken out of the acrylic case, but as shown in the third and fourth photos, natural resin from the wood's annual rings has seeped out. I researched this and found that it is not harmful to the human body and does not affect the quality, but this is based on my own research, so please consider this before purchasing. Thank you for looking.