You need to research the sweetheart ring Info. I'm class of 1970, and my wife has a '70 sweetheart ring. I think they ended with the class of '72, maybe '74.
What may have ended in '63 was the AMC sweetheart ring.
The person that is not willing to fight and die, if need be, for his country has no right to life.
James Earl Rudder '32
January 31, 1945