Thanks to each timeline introduced throughout the trilogy, several hidden story clues in Back to the Future can be found. From references to the past, future, and Marty McFly's present, there are ...
Among them is Marty McFly's screen-matched Erlewine Hondo Chiquita Guitar, which has a guide price of $100,000 to $200,000, which Michael J. Fox played in the opening scene of Back to the Future.