Antique Invar Pocket Watch in .800 Solid Silver with Rose-Gold Gilded Edging (Galonne) – Grand Prix Bruxelles 1910 Medals – Breguet Hairspring – Ornate Louis XV-Style Hands – Circa 1912 Up for auction is a magnificent, highly collectible, and completely authentic Swiss pocket watch, crafted by the prestigious watchmaking house Invar (Achille Hirsch, La Chaux-de-Fonds) and dating back to the early 1910s. This exquisite timepiece features a solid .800 silver double case with rose-gold gilded edges (*galonne*), an impressive 51.6 mm diameter, a flawless porcelain enamel dial with ornate Louis XV-style hands, and an elaborately decorated inner cuvette (dust cover) showcasing the international medals won by Invar. Key Features and Specifications: Brand: Invar (La Chaux-de-Fonds, Switzerland) Year of Production: Circa 1910–1914 (Commemorating the Grand Prix awards from Brussels 1910 and Milan 1906) Movement: High-quality Swiss manual-wind movement, signed "INVAR" on the balance bridge; movement serial number 294098; features a Breguet overcoil balance spring ("Réglage Breguet à Courbe Théorique de Philipps") Case Material: Solid .800 silver (both the outer case back and the inner dust cover/cuvette are made of solid silver), with rose-gold plated bezel and edge accents (*Galonne* / *Vermeil*) Case Reference Number / Serial Number: Stamped "C.M.I." GALONNE, featuring 0.800 silver hallmarks, official Swiss/German marks, and case serial number 266896. Case diameter: 51.6 mm (excluding the crown and bow). Total weight: 89.80 grams. Outer case back: Features a fine, machine-turned guilloché pattern with an unengraved, Art Nouveau-style shield cartouche. Inner cover (cuvette): A solid 0.800 silver cover, adorned with beautiful gilded award medallions and official engravings, depicting the "Grand Diplôme d'Honneur" from Invar (Brussels, 1910) and the Gold Medal (Milan, 1906). Dial: Original white porcelain enamel dial with stylized black Arabic numerals and a small seconds sub-dial at the 6 o'clock position. Signed "INVAR" and fitted with exquisite, ornate, gilded Louis XV-style hands. Movement: In full working order. The manual-wind movement winds smoothly, runs reliably, and keeps accurate vintage time. Aesthetics: The movement is clean and 100% authentic. The porcelain enamel dial is remarkably well-preserved. The solid 0.800 silver case displays a warm vintage patina with light, dignified signs of age. Shipping and packaging: Fast, secure, and fully insured delivery with a tracking number.