This is a fantastic piece of history for any stamp collector or aviation enthusiast.
 The Air Mail Cachet First Flight cover was flown from Boston, Massachusetts to Hamilton, Bermuda on March 14, 1969. 
The cover features a colorful multi-color design and is postmarked with a unique first flight cancellation.
 The 20 cent stamp on the cover is ungraded and uncertified, but it is in used condition. 
The cover is a great addition to any collection of event covers, airmail, or United States stamps. 
It is a unique and rare piece of postal history that would make a great gift or addition to any collection.