This card case was a gift when I purchased an Omega Seamaster Diver 300M at Hankyu Umeda in 2022. Therefore, it is definitely authentic. It is new and unused, but as you can see in the first photo, there is a slight indentation, so please check it. The box is also included! I believe this is something you can only get if you purchase a watch! Please refrain from purchasing if you are sensitive to minor imperfections, as it has been stored by a private individual. Please consider it!