Translation guide
A document that verifies an item is genuine. In Japanese, this is often expressed with terms like 鑑定書 or 証明書, depending on context.
A document issued by an expert or authority confirming an item's authenticity, such as for artwork, antiques, or collectibles.
The most common term for a certificate of authenticity for art, antiques, and collectibles. It implies an expert appraisal.
This painting comes with a certificate of authenticity.
Literally 'authenticity certificate'. More formal and explicit, often used in legal or high-value transactions.
Can you issue a certificate of authenticity?
A card or document from the manufacturer or retailer proving a luxury item (e.g., handbag, watch) is genuine.
A document verifying that an autograph or piece of memorabilia is genuine, often from a third-party authenticator.
Commonly used for autographs and sports memorabilia. Combines 'appraisal' and 'certificate'.
The signed jersey comes with a certificate of authenticity.
A generic certificate of authenticity when the specific type of item is not important or is understood from context.
A formal, all-purpose term for a certificate of authenticity. Suitable for legal or official documents.
You cannot return it without a certificate of authenticity.
A descriptive phrase meaning 'a document certifying that it is genuine'. Used when a specific term is not known.
鑑定書 (kanteisho) implies an expert appraisal and is typical for art/antiques. 証明書 (shomeisho) is a broader term for 'certificate' and is used in compounds like 真正証明書. For luxury goods, 正規品証明書 is common.
If you're unsure which term to use, you can say 「本物であることを証明する書類」(a document proving it's genuine). This is universally understood.
I bought a watch with a certificate of authenticity.
Please present a certificate of authenticity.