Series 5 LTE (giving my S3 LTE to my daughter who has an old S1). Poor light with digital zoom on iPhone = poor photo.
A very sophisticated timepiece. C shape Constellations do not get the appreciation they deserve within the vintage Constellation -line... Of course just my humble opinion...
The ubiquitous Landeron 48 drives this 50s Fortress chronograph. The post war saw millions of these inexpensive (CSuisse type) watches sold.