This is the Zutomayo Nut Ring No. 17. It's a very rare item that sold out immediately. I've only worn it once. It's been stored by a private individual, so there may be some age-related deterioration due to storage, but there are no issues with its use. Please refrain from purchasing if you are overly concerned about minor imperfections. Zutto Mayonaka de Ii no ni. Zutomayo Uniguri Nira-chan