UFOs are sighted over France

Title "Flying saucer mystery!" superimposed over hand of man pointing at map of globe showing locations of sightings of UFOs / three men kneeling in field in France looking at photo while fourth man stands near them pointing at sky with stick / same three men kneeling and looking at photo / closer shot of one of three men pointing at photo / CU man's hand flipping through photos of UFOs / man standing in field releasing meteorological balloon and camera following balloon as it flies up and away / close shot of man holding photo and pointing up at sky / close shot of photo of balloon and photo of UFO placed next to it showing difference between images of balloon and UFO / Note: exact day not known