* MAHOGANY LONGCASE CLOCK, Empire, the dial signed. CONSTTE (construite) PAR FERDINAND BERTHOUD (Ferdinand Berthoud, 1717-1802) and dated 1802, the movement signed F. BERTHOUD, Paris circa 1810. The clock with bronze dial and 2 fine silver-plated chapter rings, for minutes, hours and seconds. With visible clement anchor escapement and fine 30 day movement with large adjustable pendulum. H 202 cm. Provenance: - formerly in the collection of the Time Museums in Rockford, Illinois (Inventory number 311). - Sotheby's New York on 9.12.1999 (Lot No.67). - from a highly important European collection. An exceptionally rare clock.