This is a unique and rare item for stamp collectors and aviation enthusiasts alike. 

The cover features the first 747 flight of SABENA airlines in 1971, with a fancy cancel from the same airline. 

The blue cover is in VG/F (Very Good/Fine) condition, with some signs of use consistent with its age and history. 

The stamp cover was issued in Belgium and canceled in the United States, making it a valuable addition to any regional stamp collection. 

It is uncertified but the cancellation type is clearly visible and confirms the authenticity of the item. 

This independent nation's regional status also adds to its historical value. Don't miss out on the opportunity to own a piece of aviation and stamp history.