1855 to 1875
The transitional clocks can be viewed as either simple Altdeutsch, or ornate Biedermeier clocks. As the name suggests, transitional clocks form the link between the august simplicity of the earlier styles and the extravagance of the latter. Where the earlier pieces rarely have columns on the side of the door, the transitional clocks have either broken columns (tops and bottoms of columns with hanging finials) or slender, elegant columns. In comparison, the hallmarks of the Altdeutsch clocks were full, and typically fluted columns with Corinthian pediments and rectangular panels at the base.
As with the serpentines, pre-1860 clocks often had movements mounted to wooden seatboards that slide into corbels mounted to the backboard. The four-posted keyhole mounts were common throughout the transitional period. Most dials are two-piece porcelain with spun-brass bezels.
Transitional Vienna Regulators typically have wooden pendulum rods and brass bobs with zinc backs. Unlike the serpentines, the cases were typically made with walnut, cherry and other fruitwood veneers. There are not as many ebonized or faux (false-grained) finishes in the transitional style cases. Hand styles trend from the simple designs of the Biedermeier period to the elaborate styles of the Altdeutsch.