This watch movement was in production from 1944 until 1962. 
 
Information regarding this movement can be found on the Roamer Watch website 
 
http://roamer-watches.info/MST371.shtml 
or 
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?11&ranfft&0&2uswk&MST_372
 
The movement has not been cleaned or serviced, however it appears to be in good working order,it runs well when wound. The movement comes with a complete split winding stem with SS Roamer crown.