Well, that's one of the movie's big enigmas. Different viewers have their own theories, but the director intentionally left it ambiguous. Maybe it was something symbolic rather than a concrete object.
The briefcase's end was abrupt. But it left behind a strange energy. A group of street kids, who were always curious about the comings and goings in the neighborhood, noticed the briefcase and the commotion around it. After it was gone, they found a shiny object that had been stuck to the bottom of it. It was a small medallion with an inscription they couldn't read. They took it to an old man in the neighborhood who was known for his knowledge of ancient languages. The old man studied it for a while and told them that it was a clue to a hidden treasure. The kids, excited by the prospect, started their own adventure to find the treasure, following the clues that the medallion might lead them to.
As the briefcase snapped shut for the last time, a sense of mystery lingered. Inside it held secrets that could change lives. The man who carried it walked away into the crowded street. He disappeared into the throng, leaving those who had been watching him in a state of curiosity. Days later, a strange package arrived at the doorstep of an old acquaintance of his. It was unmarked, but there was an air of familiarity about it. When they opened it, they found a single key. This key was ornate and seemed to hold some sort of power. They knew it was related to the briefcase and started their own journey to uncover the truth.
Well, no one really knows for sure. It's intentionally left ambiguous to add to the intrigue and mystery of the film. Some theories suggest it could be something valuable like diamonds or a rare artifact, but it's all speculation.
We don't have a clear answer. It could have been anything from a fortune in cash to a precious artifact. The mystery of the briefcase adds to the intrigue of the film.
The contents of the briefcase in Pulp Fiction are left ambiguous. It could be something valuable, maybe money or some rare artifact. But the film intentionally keeps it a secret to add to the intrigue.