| authentic | respectable, entitled to esteem |
| authentic | qualified, accredited, authorized |
| authentic | valid, authoritative, credible |
| current | [as of a coin] authentic, genuine, valid |
| seal | authentication, confirmation, attestation |
| sealed | certified, authenticated [through a wax seal] |
| stamp | authenticate, endorse, validate |
| true | true to father's likeness, authentic, genuine |
| true | inherent, authentic, genuine |