The credits for this production have not yet been completed or verified.
||Mar 26, 1973
||Mar 28, 1973
Apr 28, 1973
|Standby: Ruth Hunt (Countess Matilda Spina, Frida)
|Understudies: George Boyd (1st Guard, 2d Guard, Berthold, Giovanni, Harold, Landolph, Ordulph), Thom Christopher (Berthold, Landolph, Marquis Carlo Di Nolli), Michael Diamond (Dr. Dionysius Genoni, Harold, Ordulph), Stephen D. Newman (Baron Tito Belcredi) and Douglas Seale (Dr. Dionysius Genoni)