Shirley Corrigan and Orchidea de Santis in I giochi proibiti dell'Aretino Pietro (1973)

A tale in the Decamerotic compilation Tales of Erotica stars Shirley Corrigan naked as the lady and Orchidea de Santis likewise nude as the maid.

Shirley @ IMDb

Orchidea @ IMDb
Orchidea @ Wikipedia (Italian)