Art. 92 Ziff. 1 SchKG; unseizable necessary objects; pocket watch of a worker. A pocket watch is, in modern conditions, a necessary object for a laborer, including an agricultural laborer, since it serves the accurate observance and division of working time and the proper performance of occupational duties. The exemption from seizure depends on the object's function and need, not on its ownership structure. A reservation of title does not affect seizure immunity; any proprietary claim must be raised by vindication action before the civil court. The possibility of substitution by a simpler object exists only where the seized item is of clearly superior value and the procedural prerequisites for exchange are met (consid. 1).