Nakamura Copperware Co., Ltd. Copper Egg Frying Pan 13 Long (13cm x 18cm) I bought it on Amazon for about 7000 yen. I made omelets with it occasionally after purchasing it, but I couldn't use it at my new residence because it's an IH, so I've been storing it. I don't think there are any noticeable stains, but please check the photos. Olive oil has been applied for protection.