Aspalex, thank you very much for your help.  I really do appreciate it.

 Your post reminded me that I, too, had come across the movie-time.it website about nine months ago.

I used the website's form to inquire about the movie, and they wrote back to me:

Dear David,

first of all thank you for your interest in our Library.

We are sorry to inform you that we are a company of distribution. We license
rights of exploitation and cannot give you material to the film. We can just
suggest you to contact the Italian cinematheque, maybe they can help you.

Thanking you for your kind attention,

best regards.

I take it from that email that they do not actually warehouse the movies; they're only a publishing clearance firm.  However, my non-existant Italian, and their far superior but limited English leaves that up to question. 

 I wrote back asking for information on the "Italian cinematheque," and how I could contact them, but they did not respond.

 I will, of course, write (and have someone translate), an email to the people above in hopes of getting a helpful response.  Does anyone know what the Italian cinematheque would refer to?  How to contact them?

Thank you!