is proud to introduce the limited-edition Columbia Collection, a commemorative series honoring the 250th anniversary of American independence and showcasing the company's continued commitment to American manufacturing and craftsmanship. The flagship Columbia Clock with a 4.5" dial is built with materials and methods that have defined the company for more than a century. The clock combines 's long tradition of using solid brass forgings and precision handcrafted movements with a design for today's homes. The mechanical timepiece marks the return of 's original 12E hand-wound mechanical movement, reintroduced publicly for the first time in nearly two decades. American-made and hand-built, each 12E mechanical clock requires over one month to produce. The Columbia Collection is based on Chelsea's classic forged-brass case and features a distinctive bezel design with 250 etched rays, a silvered dial, custom hands, architectural walnut base, premium brass finishing, and officially licensed America 250 logo engraving. Built by craftspeople who each average nearly two decades of experience, the items reflect Chelsea's commitment to American manufacturing, hand assembly, forged-brass construction, mechanical durability, and engineering precision.