This mini column & cornice shares a lot of similarities with the Jerome column & cornice. For that reason, I suspect it was made within a few years of the Jerome, likely shortly after New Haven acquired the assets of the bankrupt Jerome Manufacturing Co. over the course of 1856-57.
The label is similar (but not identical) to ones found in many Jerome shelf clocks from the 1850s.
The printer’s line, amusingly enough, contains a typo in the word “steam”: “BENHAM, STRAM PRINTER, NEW HAVEN”.
8-day spring-driven movement made by the New Haven Clock Co. This was a standard movement used in late Jerome and early New Haven clocks and can be found in weight- and spring-driven configurations.
Rear view of movement. Although I have not measured the wheel rim width, I think you can convince yourself that the rims of the #3 wheels on the time and strike side are slightly narrower than their equivalents on the earlier Jerome column & cornice. Over time, as movement designs evolved, manufacturers found ways of reducing the amount of brass (and thereby reducing costs).