Thank you for viewing. I am a collector fascinated by the appeal of pure copper coins. This is a 1-ounce, 999 purity copper coin. It has a diameter of 4cm and weighs 30g, with the characteristic depth of copper, shining with a subdued luster. Since it is copper, it does not react to magnets. Due to the depreciation of currency, the demand for precious metals is high, and these items are becoming difficult to obtain. I have received requests from several people to sell my collection, so I will be listing them. It is as shiny and beautiful as a proof 10-yen coin, but it will quickly tarnish and lose its luster if stored improperly. I was disappointed when I initially tarnished dozens of them. I don't want to just sell and be done with it, so to help you maintain the shine and cherish it for a long time, I will include a maintenance set suitable for long-term storage, utilizing my know-how. I also handle them with gloves to prevent fingerprints, and I carefully inspect each item. I will ship them in a coin case. I strive for smooth transactions. I also have various other items for sale, so please take a look. #winwincoin ↑ Click for my coin collection. #winwincopper ↑ Click for my copper coin collection. #winwinhobby ↑ Click for my collection.