Thank you for this share House.
As for the picture on the cover, yes, it's Brigitta Boccoli, who also acted in the movie.
Here a statement by Brigitta about the movie I found on the net and translated:
Brigitta Boccoli was 13 at the time of filming. Speaking of her nude scenes, she said: "It was a quality film, yes, but I was young and I didn't understand, and my parents didn't scold me, on the contrary ... Almost everyone saw the advertisement in the newspapers or the promo and thought it was porn. My friends avoided me"
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As other RCA Original Cast series (i.e. SP8000, or OLS), this BL 71000 series seems to go quite in the same direction issuing works by Morricone, Micalizzi, Cipriani.. from the second half of the 80's.
I can't really tell if it could be considered as library. I would catalogue it the same way I do with the 8000 or the OLS series. Either Library or Soundtrack. In my folders they're all "Soundtracks".