Koperta ze stemplem z sylwetką okrętu podwodnego USS Casimir Pulaski.
Na kopercie znaczek poczty US 6c. Stempel poczty USA z 1976 r.
Motto na stemplu na kopercie: „Per Tridentem Libertas” - "Wolność dzięki sile morskiej."
Motto on stamp on the envilope: "Per Tridentem Libertas" (Freedom through Seapower)
The stamp shows USS Casimir Pulaski (SSBN-633), a James Madison-class ballistic missile submarine.
She was the second ship of the United States Navy to be named for Casimir Pulaski (1745–1779), a Polish general who served in the American Revolutionary War.
"Control of the seas means security. Control of the seas means
peace. Control of the seas can mean victory. The United States
must control the sea if it is to protect our security."
—John F. Kennedy