"An Enlightening guide about the heritage of British watchmaking. Horology followers of all levels are sure to discover benefit here." Ming did not just slap the movement inside a circumstance and simply call it every day. The movements had been overhauled, updated, and refinished by La Joux Perret in La-Chaux-de-Fonds. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/