PSA is the world’s leading third-party authentication service for autographs and authenticates signatures from the worlds of sports, history and entertainment.
Our authenticators have a diverse knowledge base that is complemented by proprietary methods and technology to form the following four-step authentication process.
PSA authenticators conduct ink analysis, autograph structure analysis, object evaluation and side-by-side comparisons.
Authenticators may also use a video spectral comparator to further evaluate the autograph.
Once the autograph is deemed genuine, the item is marked with invisible ink that contains a synthetic DNA sequence specific to PSA. A unique, serialized label is also provided.
Either a Certificate of Authenticity (COA) or a Letter of Authenticity (LOA) is issued with the genuine autograph. The document contains the same alphanumeric serial number to match the label on the item.
PSA Explains the Appeal of Autograph Authentication