Updated 10 August 2011.
Seth THomas Clocks were an established maker of mechanical clocks who started making synchronous clocks in 1928. For more information on a clock click on the link.
Seth Thomas Cat. No. 3441 synchronous chiming mantel clock
S 101 Seth Thomas A
Seth Thomas Yukon-3E Model No. E011-066 synchronous mantel clock
S 139 Seth Thomas A