Collectie:LAB is a permanent exhibition in the Stedelijk Museum Breda (the Netherlands) showcasing lost art pieces from the depot of the museum. With most artefacts there were a lot of questions or even no information available. Because of this the ‘questions’ became fundamental to the concept and design. For each art piece there is a card on the wall with a main question, the code from the depot and the outcome of the research historians did. With these cards visitors were invited to created their own art dossier.