Piguet & Co & Gen(ve Vintage Key-Wind Pocket Watch with R&aumur Thermometer

This is a rare 19th-century Swiss pocket watch featuring a white enamel dial with black Breguet-style numeral hour markers and an outer minute track. The dial is signed 'Piguet & Co & Gen(ve' in an elegant cursive script. A unique and highly distinguishing feature is the integrated R&aumur scale thermometer positioned at the 12 o'clock sub-dial, labeled 'REAUMUR'. This thermal gauge employs a bimetallic strip visible through a central aperture, though the indicator needle appears absent or damaged. The watch is housed in a polished silver-tone case, likely sterling silver or coin silver, displaying a characteristic aged patina and moderate surface oxidation. It is a key-wind and key-set movement, as evidenced by the accompanying metal winding key. The blued steel hands show some surface oxidation but remain largely intact. The bezel is fitted with a low-dome crystal that appears to have minor surface scratches. Overall, the piece represents high-quality Swiss horological craftsmanship from the mid-to-late 1800s, combining timekeeping with scientific instrumentation. The condition shows visible wear consistent with age, specifically to the thermometer complication and the exterior metal finish, which would benefit from professional conservation.