This item has been stored for a long time. There is no deterioration other than the box. Based on the label in the image, this item is a "Modern Tea Set" (model number: TGP-1978) made by HOYA Corporation (formerly: Hoya Crystal), a Japanese optical equipment and glass manufacturer. Item Details: Brand: HOYA CRYSTAL CORPORATION Product Name: Modern Tea Set [from image] Model Number: TGP-1978 [from image] Material: Crystal Glass (HOYA was once known for its high-quality crystal glass products) Yahoo! Flea Market Yahoo! Flea Market +1 Additional Information: HOYA is currently focused on businesses such as eyeglass lenses and medical equipment, and has already withdrawn from the manufacturing and sale of crystal glass tableware. Therefore, this model number product is now a rare "Showa retro" vintage item, and is sometimes traded on flea market apps and recycle shops.