The gentleman shown above is Chuck Kunellis, who lives in Sacramento, California. The letters he's holding were sent by his father, Chris Kunellis, during World War II. The elder Kunellis sent them to his wife — Chuck's mother — while stationed in Italy during the war. But for reasons that remain unclear, the letters were never delivered and instead ended up with an American stamp dealer, who recently sold them to an Australian stamp collector named John Armstrong.
Armstrong was intrigued by the letters and did a bit of internet sleuthing that led him to Chuck Kunellis, to whom he then sent the letters. Unfortunately, Chuck's father (who sent the letters) and mother (the intended addressee) are now both deceased, but he's still excited to have these newly discovered family artifacts.
You can read more about this here, and here's a video report:
(My thanks to David Sonny and Sue Kendall for letting me know about this one.)