Yes, it is a pic from the late '70s, early '80s: Brescia appears briefly in most of his own films, I'll try to check something from the early '70s.
As I reported long time ago in the Ferroni’s Gemma Trilogy thread (Reply #7), on the French Forum there's a photo of Neapolitan singer and actor Mario Merola!
Not fat, not thin, just average build. My question was merely based on face shape, I don't see well age and body type.
Speaking of actresses, as far as I remember this scene - the image is from Filmtv.it - is not in my copy with Italian credits.