Citizen Auto Dater Seven para40mwater day-date


A special place among my favorite Citizen movements is reserved for the Jet ones. And this one has the last of the Jets Citizen ever made. My watch was made in September 1966 and Citizen produced these movements up to about 1967. The last JET is the day-date Auto Dater Seven.

citizen auto dater para water

As you can see, it is in perfect, NOS condition, with price tag and booklet. The writing on the paper is in Japanese only. The day wheel is written in Japanese so, it is safe to conclude that, the watch was intended for JDM (Japan domestic market). The entire case as well as the bracelet, are made of beautifully finished stainless steel. The crystal is acrylic. and has a date magnifier.

The style of the watch is elegant, with a fluted bezel, simple silver dial with a sunburst effect. There is no luminous material on the dial or hands. The frontal part of the case is brushed, and all the rest is polished. The bracelet is also finished with a nice combination of polished and brushed surfaces.  As I mentioned before, it is a day-date. That means that in addition to showing the date (at 3 o’clock), it also displays the day of the week (at 12). The day is in Japanese only, printed in black with red for Sundays. All the hour markers, the day and date frame and the Seven logo are applied.

The crown is used for winding the watch (although it is an automatic it can be winded by hand) and setting the time in the first position. The day changes by advancing the hands passing midnight. The date changes by pulling the crown. One pull of the crown will advance the day of the week one time. The crown get back to first position by it’s own due to a spring. Pulling it again, will change the day one more time. This system was named by Citizen “Easy Change”. What can I say, it is easy indeed.

The movement, is the last Jet, calibre 4102. It has 25 Jewels and beats at 18,800 bph. Beautiful!

Read more about watches powered by Jet movements HERE.

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Vintage Citizen Newmaster – Jet Autodater


What can I say about this one? Well… I love this movement!

Citizen Newmaster autodater

The case is the usual classic style, made in stainless steel, with a screw in caseback. It is 35mm in diameter and it is entirely polished except for the sides that are brushed. The winding crown is made in stainless steel (just as the entire case is) and it is signed CTZ. The polished bezel holds in place a domed acrylic crystal.

The dial is silver, simple, with a sunburst effect. It has black writing: “Citizen 21 jewels”, “Newmaster automatic waterproof”. The applied hour markers are polished and have multiple surfaces that reflect the light no matter the angle from where you look at them. The hour date (black numbers on a white disk) has a applied frame too. The hands are polished too (without luminous material) and have a classic shape.

Citizen newmaster autodater

The movement is the main feature of this watch due to the ring rotor that I like a lot. It is a 21 jewels movement, beating at 18,000 bph. It has a power reserve at about 45hours. The date changes only by advancing the hands. The movement, as stated , is an automatic but can be manually winded too.  I came to the conclusion that the rotating ring has 4 or 6 screws but the 4 screws one seems to be a more rare type. The thing I like the most it the beautiful sound that the rotor is making when rotating, smooth, loud, mechanic.

The strap in this case is a aftermarket shinny lizard skin one. I think it goes very well with the watch.

As a conclusion, I think anyone would love to experiment at least once the sight and the sound on a ring rotor vintage Citizen movement. I really am!

More details about Jet movement here:

https://vintagecitizenwatches.com/2015/03/26/citizen-jet-autodater-21-jewels/