These eight black cannisters held 9.5mm film, the world's first successful home movie format on safety stock. Introduced in 1922, the Pathé Baby camera and projector used 9.5mm film with sprocket holes between the frames and down the centre of the film stock. The set allowed projection of popular titles or home movies made by keen amateurs using unexposed film. The system proved popular and led to an increase in amateur filmmaking and clubs before the Second World War, after which 8mm emerged as the dominant home movie format.