THURGOOD MARSHALL SIGNED FIRST DAY COVER PSA CERTIF World Peace Through Law 1975. This is a very rare First Day Cover issued on September 29, 1975 in Washington, DC that is SIGNED by Supreme Court Justice Thurgood Marshall. His signature is authenticated by PSA/DNA, the gold standard of the industry. There is a full Letter of Authenticity that accompanies it.
The theme of the FDC is World Peace Through Law.