interesting how the german promo-material is top-billing it as a "Joan Collins movie" while Maurizio Merli is nowhere to be seen for star-attraction
also the nudie-semi nudie scene of her in the movie (which are there but relative short) are exploited to highest effect in combination with the sleazy title giving it the impression of a "sex-movie" or something.
i can imagine something similar as :
"Maurizio who? Mozarella?
I wanna see the new Joan Collins movie!"

the line "Joan Collins what she isnt allowed to reveal in Denver" is just underlining of what the promotion is "up" to
in contrary to "Lo Strano vizio della Signora Wardh" the city vienna is even recognizable, as they used some good locations, i think even "karlsplatz" is featured which is a famous (i dont know how it was back then) "melting pot" for drug sellers and drug addicts, of course for a "high lady" as Joan Collins this is not the appropriate environment..the noble "first district" is here much more suiting!