AI Appraisal Estimate

This is a Frederique Constant tonneau-shaped wristwatch featuring a polished stainless steel case and a sophisticated triple calendar moonphase complication. The silver-tone dial exhibits a classic guilloché pattern texture at the center, surrounded by bold black printed Roman numeral hour markers. It features three distinct sub-dials: a day-of-the-week indicator at 9 o'clock, a date pointer at 3 o'clock, and a traditional blue and gold moonphase aperture at 6 o'clock. The hands are black, styled in a modern leaf or 'feuille' shape, providing sharp contrast against the white dial. The brand name 'FREDERIQUE CONSTANT GENEVE' is prominently printed below the 12 o'clock position, with 'SWISS MADE' visible at the base of the dial. The watch is fitted with a black alligator-patterned leather strap and a standard fluted crown. Regarding condition, there is visible light scratching and minor scuffing on the polished steel bezel and lugs, consistent with regular wear. The crystal appears clear, though some accumulating dust is visible around the inner edge of the bezel. The craftsmanship reflects the brand's Neo-Classical style, likely dating from the early 2000s, showcasing high-quality Swiss quartz movement engineering within an elegant, vintage-inspired tonneau silhouette.

Upon visual examination of the Frederique Constant Moonphase Tonneau (FC260X3T5/6), I find the piece to be a textbook example of the brand's 'Accessible Luxury' philosophy from the early 2000s. The tonneau case remains a niche but respected silhouette, and the inclusion of a triple calendar with moonphase adds significant horological appeal for a quartz-driven movement. The dial's guilloché center and Roman numerals are crisp, consistent with Frederique Constant’s production standards. My assessment of the condition reveals moderate 'desk diving' marks on the polished bezel and lugs, which are typical for stainless steel of this era. While the crystal appears intact, the debris near the bezel suggests the seals may need inspection. The secondary market for quartz Frederique Constant models is stable but limited compared to their Manufacture mechanical lines. Comparables for this specific reference typically hammer between $400 and $700 depending on the strap condition and presence of original packaging. The specific 'Tonneau' shape increases rarity slightly, as the brand now focuses heavily on round 'Classics' cases. Value is negatively impacted by the visible wear and the lack of an original deployment clasp. Limitations: This appraisal is based on photographic evidence. A formal authentication would require a physical case-back removal to verify the caliber FC-260 quartz movement and bridge signatures. I would also need to inspect for battery leakage or corrosion and verify the leather strap's authenticity. A full service history or original 'Box and Papers' would be required to reach the higher end of the estimated value range.