Choral Public Domain Library

As this song is quite well-known, I wondered if someone have the copie of the original (as everyone have or can find the first Petrucci's somewhere). I think that asking st. cecilia (as i lived in italy for one year) or any institutes will become a horror and not really worthful to waste time at the...

Thank you all so much! and also sorry for my english.
Yes... I am looking for the facimile of the song that havnt transcripted yet.

Hello
I'm searching for the hard-copy(original archive) of Marenzio's "occhi lucenti e belli". Does someone know where can i find it, or could someone send me?
Thank you in advance.