The story
Abraham-Louis Juillard opened his small watchmaking store in Cortébert village in Switzerland in 1790. This date is commonly used as the date of founding although the Cortébert brand name was not registered until 1855 using the bottony cross as a logo.
Cortébert became well known for their railroad watches: they supplied both the Turkish railroad system and the Italian railroad system, as well as a number of street car systems throughout Europe.
In the 1927, at the request of Mussolini, Cortébert started distributing their watches in Italy under the Perseo brand name, as fascist Italy rejected foreign brand names. It is under this name that they were used by the Italian railway system.
The Russian watch factory Molnija produced a number of calibers that were very similar to Cortébert's 16 Ligne Cal. 620.
By 1944 Cortébert had a lineup consisting of 20 different calibers.
Perseo continued to be used by the Italian railway system after World War II and became well regarded by the Italian public. Perseo continues their relationship with the Italian Railroad System.
In the early 1970s, Cortébert suffered deeply from the quartz revolution sweeping the world watch industry. The representatives of Cortébert in Italy bought the Perseo brand name from Cortébert and continue today as an independent company.
Cortébert closed in the early 1970s and production ceased.
From Wikipedia’s article on Cortébert (watch manufacturer), shared under CC BY-SA 4.0.4