Eterna-Matic
The earliest automatic movements from Eterna were advertised using the Eterna-Matic name. Although somewhat related, there were many differences between the various movements that used this name.
Eterna's first automatic movement was Cal. 835 in 1939. This 12.5 ligne movement featured small seconds. Between 1940 and 1945, Eterna introduced more movements, all with bumpers rather than free-rotating mass. These were not Eterna-Matic branded.
- Cal. 833 - 12.5 ligne, central seconds
- Cal. 834 - 12.5 ligne, small seconds
- Cal. 1033 - 9.5 ligne, no seconds
- Cal. 1034 - 9.5 ligne, central seconds
- Cal. 1158 - 12 ligne, central seconds
- Cal. 1159 - 13 ligne, central seconds
- Cal. 1176 - 13 ligne, small seconds
All of these movements were abandoned after 1948 as Eterna had developed a new movement with a central rotating mass mounted on ball bearings.
Models with direct central seconds:
- Cal. 1194 - 7.75 ligne (17.20 mm) diameter, 5.35 mm thick
- Cal. 1195 - 8.25 ligne (18.30 mm) diameter, 5.35 mm thick
- Cal. 1198 - 9.25 ligne (20.50 mm) diameter, 5.35 mm thick, replaced by Cal 1319
- Cal. 1199 - 10 ligne (22.10 mm) diameter, 5.35 mm thick, replaced by Cal 1321
Larger models:
- Cal. 1237 - 12.5 ligne (27.60 mm) diameter, 5.90 mm thick, central seconds, date window
- Cal. 1239 - 13 ligne (29.00 mm) diameter, 5.90 mm thick, central seconds, date window
- Cal. 1247 - 12.5 ligne (27.60 mm) diameter, 5.90 mm thick, central seconds
- Cal. 1248 - 11.5 ligne (25.60 mm) diameter, 5.90 mm thick, central seconds
- Cal. 1249 - 13 ligne (29.00 mm) diameter, 5.90 mm thick, central seconds
A line of more compact movements was soon introduced as well, with many similarities to the Cal. 12xx series:
- Cal. 1319 - 9.25 ligne (20.50 mm) diameter, 5.60 mm thick, central seconds
- Cal. 1321 - 10.5 ligne (23.30 mm) diameter, 5.60 mm thick, central seconds