Open-Faced Watch is the beautifull watch

 An open-faced, or Le pine ,watch,is one is which the case lacks  a metal cover to protect the crystal. It is typical for an open-faced watch to have the pendent located at 12:00 and the sub second dial located at 6:00. Occasionally, a watch movement intended for a hunting case( with the winding stem at 3:00 and sub second dial at 6:00) will have an open-faced case. Such watch is known as a “sidewinder “. Alternatively, such a watch movement may be fitted with a so called conversion dial, which relocates the winding stem to 12:00 and the sub-second dial to 3:00. After 1908, watches approved for railroad service required to may be cased in open-faced cases with the winding stem at 12:00.