Find below, an example of authorization letter for PSA to adapt to your personnal needs. You can also download this document in word format.To whom it may concern: Greetings! (Name of Parent) (Name of Representative) to claim a copy of Authenticated PSA Birth Certificate of my child . To whom it may concern: Greetings! Order your PSA birth certificate online. 3. Fill Out the Application Form. Arvin V. Mantes authorizes Anna Liza P. Guevarra to claim a copy of his PSA birth certificate on his behalf. PSA AUTHORIZATION LETTER: All applicants must sign this form EXCEPT THOSE APPLICANTS WITH TOURISM PURPOSE OF VISIT IN JAPAN.