Seth Thomas Regulator 2... my first mechanical clock. c1890. The No. 2 is one of the most collectible clocks ever, as they were made from 1860 to 1950, with a re-issue of 4000 in the 70s. Although it has a second hand, the length of the pendulum means the clock ticks 80 times a minute... which means it ticks every 3/4 of a second.