That's awesome!!!
My first flight at 4 months old was on Air France Lima -> Bogota -> Point a Pitre -> Paris in the late 60s (no non-stop LIM-ORY then, CDG did not exist yet).
I did not get anything like that certificate though.
OP: You may want to cross out your last name and dates, there is a lot of things that can be done with name and DOB.