This tallcase timepiece is very unusual. It has a brass, weight driven movement with two weights driving the time train and an integrated B. B. Lewis perpetual calendar in its waist. The movement runs for 30 days on a winding.

The mahogany case has beautiful inlay.

The perpetual calendar in the waist is a standard, early B. B. Lewis mechanism with the label and instructions in tact on the back. The calendar accounts for the different lengths of month as well as leap years.