Jono, you are welcome. You can try and google Italian stamps. Go to "images" and look for your stamp - it will come up. Another way is to go to the website I already mentioned, www.stampworld.com and search until your stamp shows up.
Wow, Posting this I realize that there is an error in my page. I am missing the 75c red which in actuality is Scott #4. Your stamps is #5. There is no 1.5 l stamp. (I don't know what I was drinking when I made this page).
I will fix this right away, I guess that is the beauty of digital albums, they are easy to change.
Sorry for the confusion.
edit: I discovered what I had done, I had just affixed the #5 in the #4 spot. (which was missing the "2". It has since been fixed