"An Insightful manual on the heritage of British watchmaking. Horology admirers of all concentrations are certain to find benefit here." Ming did not just slap the movement in a very situation and contact it a day. The movements have been overhauled, up-to-date, and refinished by La Joux Perret in La-Chaux-de-Fonds. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/