Since the duplicate thread was deleted along with the information answering the question of the topic of the medal pictured, I'll post it again.
Answer: The Drafting of the Articles of Confederation
For future reference these are some of the other subjects issued in 1977.
50th Anniversary of the Peace Bride US/Canada Buffalo, NY Aug. 4, 1977
Skilled Hands for Independence (Tailor) Cincinnati, OH July 4, 1977
Drafting of the Articles of Confederation York, Pa Sept 30, 1977
Commemoration of General Herkimer at Oriskany Herkimer, NY Aug. 6, 1977
Skilled Hands for Independence (Miller) Cincinnati, Oh July 4, 1977
Christmas 1977 (Valley Forge) Valley Forge, PA Oct, 21 1977
50th Anniversary of Talking Pictures (Al Jolson) Hollywood, Ca Oct 6, 1977
First Civil Settlement in Alta California San Jose, Ca Sept. 9, 1977
Washington's Victory in Princeton, Princeton, NJ Jan 3, 1977
George Burgoyne's Surrender at Saratoga Schuylerville, NY Oct. 7, 1977
Christmas 1977, Omaha, NE Oct. 21 1977
Skilled Hands for Independence (Cobbler) Cincinnati, Oh July 4, 1977
Layfayette Support of the American Revolution Charleston, SC June 13, 1977
Centennial of Sound Recording Washington, DC Mar. 23, 1977