As a result of comments and information after uploading the page, I’ve made a few amendments and additions. The amendments mainly relate to the the first paragraph, where I referred to Citizen’s ‘world’s first’ claim in their technical guide. I’ve also included a link to the Watch Forum where there are some interesting and informative comments about the development of electric / electronic watches.
I’ve added an image as well about the 1970 chronometer with a titanium case – that was a world first!
I’ve also added more information on the 78 movement, with a couple of images too.
Further amendments / additions are likely so I’ll let you know here when they happen 🙂