Anonymous Solid Silver 800 White Porcelain Dial Pocket Watch Swiss Made Grand Prix Paris 1900 Medaille Dor Geneve 1896 ANCRE Levves Visibles Double Plateau 15 Rubis balancier compiense spiral breguet Movement Swiss patent # 17353 Silver 800 . Weight Grand Prix Paris 1900 Medaille d'Or (Gold Medal): This indicates that the watchmaker or the movement design won a gold medal at the 1900 Exposition Universelle (World's Fair) in Paris. Many Swiss watchmakers showcased their creations at this event. Geneva 1896 Medaille d'Or: A similar gold medal was won at a Geneva competition in 1896, further highlighting the high quality of this watch or its movement. ANCRE Levées Visibles: "Ancre" means the watch features a lever escapement, a common and reliable mechanism. "Levées Visibles" refers to visible jewels on the escapement, a hallmark of high-quality watches at the time. Double Plateau: Indicates a double-roller escapement, which enhances precision and reliability. 15 Rubis (Rubies): The movement uses 15 jewels to reduce friction, a standard for mid-to-high-grade watches from this era. Balancier Compensé & Spiral Breguet: "Balancier Compensé" refers to a compensated balance wheel, designed to improve accuracy by offsetting temperature changes. "Spiral Breguet" refers to a Breguet overcoil hairspring, which improves isochronism (consistent timekeeping). Swiss Patent #17353: This patent likely pertains to the movement's design or a specific innovation. A Swiss patent of this number corresponds to a filing around 1898–1900, further confirming the watch’s production era. Silver 800 Case: The case is made of 0.800-grade silver, a standard alloy for Swiss watches of the time. The open-face design suggests it was intended for everyday use. The specific maker is not named on the dial or movement, but based on the awards and features, the watch likely comes from a high-quality Swiss workshop. Many independent Swiss watchmakers participated in competitions and used medals like these for marketing. Ebauche (blank movements) were often produced by larger companies like Longines, LeCoultre, or Patek Philippe and then finished by smaller ateliers. In Great Working Condition, Keep Very Accurate Time. Just recently was serviced. Please have a look at our vintage watches we have constantly listed on Chrono24.