• Brand: Chelsea Clock Company (Boston, MA) • Model: Wythe House Mantel Clock • Movement: High-grade 8-day mechanical movement (winds with a key) • Serial Number: 777733 (visible on the brass movement) • Era: Most of these were produced between the 1960s–1980s • Collaboration: Made under official license by Colonial Williamsburg Foundation These “Williamsburg Restoration” clocks were designed as accurate reproductions of an 18th-century clock in the Wythe House. Chelsea is one of the top American clockmakers, known for marine chronometers and luxury clocks.