We also have three of Bandini's notebooks, similarly in French, https://www.zegarkirolex.to/kategoria-produktu/day-date/ and dated 1953. In her notes below, she is equally meticulous in her drawings. In the first image, she takes notes on different types of hairsprings, noting the ratios required and what type of watch they would be suitable for. In the second set of pages, she https://www.zegarkirolex.to/kategoria-produktu/yacht-master/ observes an example of secondary error, following changes in https://www.uhrluxus.de/category/replica-breiting/ amplitude and rate in a watch movement over five days.