R and A style clock pendulum with a hook top and the rating assembly on the bottom to regulate the time. The R and A stand for Retard or Advance as the time keeping is controlled by the rating nut on the bottom of the bob.
Pendulum with a hole top mount for kitchen or gingerbread style clocks.
This is a 7 inch pendulum from tip to tip.
This would hook to a modified long suspension C from the pendulum parts page.