Hugo Eckener Signed/Autographed FDC Envelope Graf Zeppelin d. 1954 PSA 201847

Offered is a Hugo Eckener Signed/Autographed FDC 6.5"X3.5" Envelope Graf Zeppelin deceased in 1954. This Envelope is authenticated by PSA and is encapsulated in their Tamper-proof Acrylic Case.