Horological Meandering

By Stephen Netherwood. In the wider world, Citizen is maybe not so well known for its vintage mechanical watches, and particularly for their divers made from the mid 1960s and through the 1970s. Although there's a page on this blog which describes the var...  

For unveiling a slice of history of Japan\'s largest watch maker. As Citizen is rarely discussed here, this is all the more valuable On another note - the numbers. Do you by any choice know how they have been selected in Japan? What I mean is Seiko 5, Cit... 

I am focused on rolex tudor omega doxa seiko and cotizen. Blancpain is a difficult one for me to learn about. But i am intrigued by seiko, citizen and Doxa but just in the small time frame.

I am not sure what you mean by "not much interest" after '75?

There was more of a "battle / race" early on to innovate and capture the enthusiast dive market. Post 1975 it was a broader market. And the Quartz era was afoot. Bill

Super Compressor cases, dephtmeter, alarm, screw in crown, decompression scale, and so on... All this came before 1975. After, what did we have? Quartz apart? Best, Nicolas

It was a question regarding the '75 cut-off

But don't worry, I am preparing an exhaustive ( and exhausting ) post about vintage diving watches. I started to write it one year ago, I still have to complete with some informations and pictures. Best, Nicolas

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Good question about '7' - I'm not sure exactly why '7' was used by Citizen - it started in the early to mid-1960s. It may relate to watches with 7 features (e.g. shock resistant, water resistant, day and date, phynox spring, and ...something else) or perh...  

I then really wonder if Ricoh\'s 9 is then just one upmanship

...that these have EPSA cases?

The late sixties and early seventies are marked by some great watches. This Citizen diver is most definitely one of them. Twin crowns are a signature style for the EPSA compressor watches to set the inner bezel but a Japanese manufacturer would not turn t... 

Although I'm not familiar with super compressor (EPSA) cases I understand that the Citizen twin crown models are not of this type. Here's a pic of the movement and opened case: The case back is a conventional screw down type: My version has the red dial: ...  

These are beautiful watches and I enjoyed reading about them but I must correct your assumption that they are compressor watches. Its a common misconception that if a watch has two crowns and an internal bezel, it must be a supercompressor but in fact Com...