Signed “Love, Jack,” the postcard was sent by a hero of the Titanic disaster – but he wasn’t the fictional (swoon!) Jack Dawson character played by Leonardo DiCaprio in the epic 1997 movie.

Signed “Love, Jack,” the postcard was sent by a hero of the Titanic disaster – but he wasn’t the fictional (swoon!) Jack Dawson character played by Leonardo DiCaprio in the epic 1997 movie.