"Defective" - There is a slight stain on the inside of the case. There is no problem with use. Please check the second photo. Corporate Seal Case for 3 Seals - Seal Case - Stamp Case - Seal Holder - Corporate Seal Case - Cosmetic Case - Compatible with 16.5mm to 24.0mm for cylindrical, tenmaru, tenkaku, and kakusundo seals.