Separate the case from the mechanism
The decorative case, dial and movement can be in very different states of preservation. Request photographs of each accessible area and a written list of included components. Record dimensions and weight where known. An appealing case should not lead you to assume the mechanism has been serviced or is complete.
Ask what has actually been checked
A short video of moving parts is not a record of accuracy or reliability. Ask for details of documented work and distinguish those from observations made by the seller. If regular operation matters, arrange assessment by a competent clockmaker before deciding what installation or service is required.
Choose a suitable setting
For a hotel or guest house, decide whether the clock is intended to operate or serve as a decorative piece. Consider the requested use of the strike, the support and access for ongoing attention. Keep instructions and the service record with the object file. Describe a decorative installation honestly rather than presenting an unchecked mechanism as ready for daily operation.
For the next part of your selection, read Comtoise clock movements: inventory and compatibility.
For a related collection, explore antique clocks and mantel clocks at French Country.