Re: Enterprise "Flight Deck Officer" Certificate
Is this it? Was first in the list on Google when I searched for 'star trek "flight deck officer" certificate'. It might be Gene's signature (I've never seen a verified sample though). But Kirk's looks more like a woman's handwriting to me, maybe it's Majel's.
Dr. Howard, Dr. Fine, Dr. Howard: For Duty and Humanity!
--Men in Black, 1934.