This is a unique item that commemorates the USS Robert E Lee's 15 years in commission, with a cachet dated September 16, 1975. 

USS Robert E. Lee (SSBN-601), a George Washington-class fleet ballistic missile submarine, was the only ship of the United States Navy to be named for Robert E. Lee (1807–1870), the commanding general of the Confederate forces during the American Civil War.

Her keel was laid down on 25 August 1958 by the Newport News Shipbuilding & Dry Dock Company of Newport News, Virginia. She was launched on 18 December 1959 sponsored by Anne Carter (Lee) Ely, a granddaughter of Confederate General Robert E. Lee and widow of Hanson Edward Ely, Jr., and commissioned on 16 September 1960 with Commander Reuben F. Woodal commanding the Blue Crew and Commander Joseph Williams, Jr. commanding the Gold Crew.