Chelsea Clock Company has produced over 800,000 fine clocks in Joseph H. Eastman's original, Eastman Clock Company, factory since 1897. After the failure of the Eastman Clock Company in 1896, Harry Bates, formed the Boston Clock Company of Maine using Eastman's factory and clock designs. His use of this famous name has led to much confusion as to the origin of the Chelsea Clock Company. The Boston Clock Company of Maine, 1896-1897, was a completely different company from the original Boston Clock Company, 1884-1894. The Boston Clock Company of Maine produced a limited number of marine and regulator clocks in 1897 that were ultimately sold as products of the infant Chelsea Clock Company. Chelsea clock #204, shown below and marked Boston Clock Co. on the movement, is one of these clocks. Charles H. Pearson was the founder of the Chelsea clock company in mid 1897, taking over the Boston Clock Company of Maine factory and material.
4.5" Library, 1906