This recording appears to be an audition performance, presumably for the NZBS.
Side 1. "Credo" (from 'Othello')
[possibly: Othello - Verdi - Credo in un Dio crudel].
Side 2. "The mask ball - Eri tu"
[possibly: Un ballo in maschera (A Masked Ball) - Verdi - Aria: Eri tu che macchiavi quell'anima]
Date unknown.