1991 Star Trek Trading Card. PSA / DNA Certification #. 3 1/8″ x 5 3/8″. PSA/DNA is a state-of-the-art autograph authentication service developed by Professional Sports Authenticator (PSA) of Newport Beach, California. Utilizing a specially synthesized DNA technology provided by DNA Technologies, Inc. PSA/DNA provides legitimacy to autographed collectibles and helps combat the problem of …