Seat belt identification

[Manu83]

Since I haven't found any documentation on this, could you help me identify which aircraft this seat belt was installed on? Thanks!

 

[pb43]

Manufacturer:- The Società Aerostatica Avorio (historically associated with Major Luigi Avorio and engineer Celestino Prassone) was a pioneering Italian aviation and aeronautics firm. Famous for creating the trilobed observation balloon (pallone frenato) used during World War I, its former manufacturing complex, the ex Stabilimento Società aerostatica Avorio, is located at Via della Vasca Navale 84 in the Ostiense district of Rome.

It looks like the parachute harness for an ejection seat. Possibly T-33, or Fiat G.80