Please help me to identify this Combat Dagger

[Bizio]

I just registered to this forum and I would like to say Hi to all members and staff here.
I am an Italian collector of USGI items, including bayonets and knives.

Salu2 a to2
Bizio

 

[Shorttime]

Pictures?

 

[Bizio]

I could not edit the original topic title.

I started a new topic in a proper collectors section
http://www.bladeforums.com/forums/showthread.php/1123507-Please-help-me-to-identify-this-dagger