The picture shows a view of this 1978 United States Navy Submarine Force 78th Anniversary Advertising Ceramic or Porcelain CoffeeCup. The mug is dated April 1978. The mug pictures an early U.S. Submarine and a modern day nuclear or atomic submarine. It is marked as follows:
78th ANNIVERSARY UNITED STATES SUBMARINE FORCE APRIL 1978
The mug measures 3-11/16'' tall. It appears to be in mint unused condition as pictured.