This is a copper mug with a hammered finish, crafted by artisans. While Moscow Mules, a vodka-based cocktail, are traditionally served in copper mugs, this mug can be used for iced coffee and other cold beverages as well. R&W, meaning "red and white," is the brand name that represents the contrast between copper and tin. I purchased this mug new a few years ago and have used it a few times. Although there are some minor scratches, I believe it is in good condition. Please check the photos. It is sold on Rakuten Ichiba for a retail price of 5,500 yen, so I am offering it at a used price as I am decluttering. From the official website: [Specifications] ・Copper (Inner surface: Tin plating) ・Outer surface: Acrylic lacquer ・Hammered finish ・Φ111 x Height 70mm ・Capacity 350ml Please refrain from purchasing if you are sensitive to used items. Thank you for looking.