Who sang nessum dorma in 1960?

The aria is actually spelled "Nessun dorma" and the character who plays the part (or sings the aria rather) is Calaf, who is the unknown prince. In Italian he is "il principe ignoto". If you want to know who specifically sang the aria in the year 1960, then that would be Jussi Björling, who made a recording of the aria in the 60's, though many tenors may have performed that aria in that year.