A prop grenade from Jon Turteltaub's 2004 action adventure, National Treasure. In the film, Benjamin Gates (Nicholas Cage) must locate the knights Templar treasure before a team of mercenaries does. One of Ian Howe's (Sean Bean) henchmen can be seen working on applying a timer to a grenade as the team prepares to break in and steal the Declaration of Independence.
CoA: Prop Store of London