The Fontainemelon 9 watch movement is a manual wind mechanical movement that features a sweep second hand. It belongs to the rocker-bar winding category, specifically the 901 modification, which lacks a setting-lever spring. Additionally, it does not have any date function. This movement includes minor modifications to the base plate compared to the original 900 model. The Fontainemelon 9 movement was commonly used around the period of 1960.