Chelsea 6" Library Clock. The Library Clock was made from about 1906 to 1911. The clock sits on a symmetrical base with fine beaded decoration all around. The case and base are finely finished and polished front and back. This is a very fine early example with Roman numeral dial engraved George E. Butler, San Francisco. The clock strikes ships bells with fine Chelsea tone. Serial number 24285 dates the clock to 1907. A very uncommon Chelsea.