The
eight-day-running timepiece movement is original to the case.
As the dial reads, this is a true regulator. The movement
is of the finest quality, featuring polished cut pinions,
dead-beat escapement, and maintaining power.
The
calendar automatically compensates for differences in the length
of the months, including Leap Year, hence the term
perpetual. During the late 1850s, James and Eugene Mix
manufactured a type of perpetual calendar mechanism showing the
days of the week and the months on rollers.
The
brothers later received two patents on improvements to the
calendar and then sold their rights to the Seth Thomas Clock
Company in 1864. The
latest patent date on the original label is 1862.
This
excellent timepiece also features a brass-faced damascened
pendulum bob (at left).