This is a vintage Adidas sneaker, but the model name is unknown. After researching, it's almost identical to the "ROYAL" model, but I can't confirm it because there's no writing on the tongue. Only the size is indicated: 7 1/2. I bought it about 15 years ago at a vintage shop in Tokyo. There's no model name, Trefoil (logo), or country of manufacture on the tongue or inside, so I was intrigued and bought it, thinking it was a rare item. Afterwards, I researched it and asked other vintage enthusiasts, but everyone was puzzled. I think it's probably a sample of the "ROYAL" model that was released. I've been collecting vintage sneakers for many years, but this is the first time I've seen such an item. The construction definitely indicates that it's a vintage sneaker from the 70s or 80s. There is some dirt and wear, but I think the condition is decent for a vintage item (in my opinion). As shown in photos 11 and 12, there are some areas where the stitching is cut. Please understand that this is a vintage item, including its condition.