Een Accutron horloge is een stemvorkhorloge.
Van het stemvorkhorloge zijn wel meer verschillende merken, naast Bulova. Daar heb je o.a. de volgende merken in. Tissot, Longines, Omega, Eterna, Zenith, Longines, Certina, IWC allen met een ETA-ESA 9162. Maar deze zijn allemaal van na 1968 of zo. Citizen zelf na 1971
Wikipedia zegt: The world’s first prototype analog quartz wristwatches were revealed in 1967: the Beta 1 revealed by the Centre Electronique Horloger (CEH) in Neuchâtel Switzerland,[15][16] and the prototype of the Astron revealed by Seiko in Japan (Seiko had been working on quartz clocks since 1958).[15]
In December 1969, Seiko produced the world’s first commercial quartz wristwatch, the Seiko-Quartz Astron 35SQ[17] which is now honored with IEEE Milestone.[18] The Astron had a quartz oscillator with a frequency of 8192 Hz and was accurate to 0.2 seconds per day, 5 seconds per month, or 1 minute per year. The Astron was released less than a year prior to the introduction of the Swiss Beta 21, which was developed by 16 Swiss Watch manufacturers and used by Rolex, Patek and Omega in their electroquartz models. The inherent accuracy and low cost of production has resulted in the proliferation of quartz clocks and watches since that time. By the 1980s, quartz technology had taken over applications such as kitchen timers, alarm clocks, bank vault time locks, and time fuzes on munitions, from earlier mechanical balance wheel movements, an upheaval known in watchmaking as the quartz crisis.
Ik ben van mijn geboortejaar afgestapt en aangezien ik altijd al een Omega wilde hebben, ga ik nu op zoek naar een 198.012 of een 198.011. Voor wie ze niet kent, wat voorbeelden van het net: