Watches destined for the French marquet had Fab Suisse or Fabriqué en Suisse written on the dial. See link below.
I thought this looked like it said Fab SUISA but it doesn’t work as SUISA is not used in any language. Switzera or Suiza yes but not SUISA. To my knowledge only France required the special indication.
http://thoughts.onthedash.com/thoughts/the-fab-suisse-marking-on-watch-dials/Click to expand...