Signing & authentication
PSA / PSA/DNA
What they do
Autograph authentication and grading (ink analysis, autograph structure analysis, side-by-side comparison, video spectral comparator, encapsulation, public cert verification) (Autograph Authentication); PSA/DNA In-The-Presence witnessing at events, signings and private sessions for dealers, promoters, agents and sports organizations (In-The-Presence Authentication)
- Mail-in / send-in
- Submission program with submission form, pricing, return shipping and packaging guidelines; the page does not use the words mail-in/send-in (Autograph Authentication)
- Authentication services
- Yes — including real-time witnessed certification with a tamper-evident label applied on the spot (In-The-Presence Authentication)
- Business or partnership contact
- n.a.; support hub only (PSA Help & Support)