As said, its Italian, reads like the recent ebay bike. If so, nice.

Now, what can you make of that soup of numbers and letters?
Well, the small bikes got forks matched to them early it seems, as the steerer had to be positioned to insure that a headset and stem would fit.

Here is a sampling of identifiers:

http://bhovey.com/Masi/MasiItaly.htm

If it was American, its much easier:

http://bhovey.com/Masi/masidates.htm