|Homepage - Contents - H. Transistorised Watches with Balance, 1. Dynotron, ESA||< Previous page | Next page >|
|1||ESA 9150 Dynotron.|
Oscillation frequency 3 Hz. A watch with date-indication.
1962-1967 Many tests are carried out and a large number of chronometer certificates obtained.
1967 A limited quantity has been marketed by ESA.
1968 Production in large quantities starts to take place.
|2||ESA 9154 Dynotron. The frequency is altered to 4 Hz. Sales started in 1970.|
|3||ESA 9157 Dynotron with date. ESA 9158 Dynotron with day and date. Sales started in 1975.|
|4||ESA 9159 Dynotron, no hands but equipped with revolving discs, manufactured with and without lighting. A rare watch.|
|5||ESA 9176 Digital display on cylinders. Marketed by Jaz: the 'JAZ-Derby'. Introduction at the Basle Fair in 1974. Sold by Jaz with six different case designs.|
|6||ESA 9190 = Lip R 50 ladies' watch. Frequency 3 Hz.|
|7||ESA 9200 (1976) 'Frontronic'. A ladies' watch. Frequency 4 Hz. (= Longines 7102)|
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