jet movement

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Citizen Jet (Super Jet) Auto Dater


Citizen is famous for a lot of innovations and really cool watches and we can not talk about Vintage Citizen Watches without mentioning the Jet movements. What is a Jet calibre? Well… it is an in house Citizen made one, an automatic with a ring rotor unlike the common oscillating central mounted one that everybody is familiar with. Most of the people think that it is the first automatic calibre developed by our loved manufacture but it is not quite like this. In fact the first one was the Auto. But that one was soon dropped and in 1961 The Jet came to life, and what a fabulous one it was; short lived (1961 – 1967) but so beautiful. It came in a simple three hands watches, with or without a date and even a final day – date version.

Today I will introduce to you the (simple, dress style, non diver) date version, the easiest to find and enjoy the wonderful movement.

auto-dater-parawater-citizen-jet

As you can see it came with a variety of dial colors and configurations. The crystal is acrylic and usually they are on a leather strap. Most of them are made of stainless steel, a lot are gold plated and a only few are solid gold. All of them have a Jet movement and display the time (with a central non hacking second hand) and the date. The date is non quick set but changes by moving the hour hand over midnight and back to 21 and again at midnight. Some movements had a special feature called Easy Change that allows a fast set mechanism to advance the date. Just pull the crown in and release it and the date changes one time, do it again and it changes again. Just as easy as it sounds. They run at 18,000 bph and have a power reserve of about 45h. From what I know they all have hand winding too. (only some of the diver style earlier versions I know about might come without hand winding). You can read more about the 21 J calibre HERE. It also came with 23J and the top of the range 39 J Super Jet.

citizen-super-jet-autodater

What else? Well… I guess it is a feeling that has to be experienced, owning such a marvel, winding it, listening to it, watching it… So, take your chance, you won’t be disappointed.

If you want to read more about my favorite Jet, a diver, you can find it HERE.

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Citizen Super Jet Auto Dater X case


Super Jet! Wow again! And a “X” case?! Super! 

Some say the best period of Citizen was around 1969, some say it was earlier and others believe it was after 1970. Well.. 1969 was at least an interesting year because Citizen had a lot of cool features intersecting around this time frame. The watch I will present to you today was made in June 1968. So… let’s see it!

citizen super jet auto dater 1

This particular time piece is loaded with a lot of cool features. It is the Citizen Super Jet Auto Dater, model SADS51202-Y. It has a polished/brushed stainless steel case, marked with a circled X. That means the case is unibody and it has no removable case back. In fact the movement comes out only if the crystal is removed. I also love the fact that it is marked “Parawater” (not the common “water resistant” or “water proof”). This was a therm that only Citizen used in order to show that the watch is in fact water resistant, and this one was up to 150m. Not having a removable case back eliminated a weak link into this water resistance issue. You can read about the first Japanese water resistant watc, the famous Parawater, HERE. The mineral crystal is domed, with a concave inner surface. The dial is matte black, with a somehow satinated appearance. It is marker with a 3 stars applied label, an indication to the awesome movement inside. The luminos hour markers (the hour and minute hands have luminous parts too), have a polished trapezoidal shape making time reading very easy to do. The date is positioned at 3 o’clock, where the unsigned winding crown is located too. By the way, the crown is manually winding the automatic movement, sets the date while the date changes only by moving the hour hand back and forward midnight.  I was so wrong! How come I missed the fact that the date changes by pulling the crown?! Just pull the crown in the second position and the date jumps! Pull again, it jumps again! 🙂

citizen super jet auto dater 2

Let’s open it up! Let’s not forget the X marked case, with integrated case back!  The first thing one have to do is to remove the bezel (this is also keeping the crystal into place). Use the right knife blade to pop it open. Then remove the crystal. I do that using a suction cup. On the lateral part of the crystal there is a black rubber seal and underneath the crystal there is a transparent one in order to facilitate water resistance. So, the crystal is out, and so are the seals. Now turn the watch dial side down and slowly turn the crown. The movement will fall, so pay attention. Now that we have the movement out, turn it so we can see it. The beautiful Jet movement, gold plated, 39 Jewels, three stats, in all its glory! Love it! Read more about Jet movements HERE. Reassembly is somehow similar. A special attention should be payed when placing the crown back. Press it into place only when in the right position into the movement, otherwise the stem can break. When pressure fitting the bezel back into place, be careful not to break the crystal. The stem or/and the crystal are not available for sale anywhere. So… take your time or take it to a watchmaker. 😉

citizen super jet auto dater 3

Anything else? Well.. not only that is in almost perfect condition but I can introduce to you how the original box should have been. Most of the times the box alone can double the value of the watch if it can be sourced. So… this is how a Super Jet auto dater box should look like.

If you want to see the 150m diver version of this watch, one of my all time favorite pieces, click HERE. 

I hope you enjoyed the article and found the info about the X case watches useful. Now, lets get them opened! 🙂 These movements need to be seen! Click on the images to magnify them if you need more details.

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Citizen Jet Para Water Professional


I was and I still am intrigued by the fact that the lume on Citizen watches doesn’t seem to age like the one on Omega or Rolex or other collectable brands. In fact I lusted for an aged, yellow-brown lume for some time now, on a vintage Citizen and was not able to find a good one. They are either perfect green like new, or, on not well preserved pieces, dirty. It made no sense to me. How can I get a nice patina dial? Finally my dream came true with this awesome timepiece!

The Citizen Jet Para Water Professional

Inside the case back the model no reads: JTI30705I

citizen jet parawater professional

This watch was made in 1962 soon after the introduction of the first water resistant Japanese watch: the Parawater. It also has the Professional label, a rare clasp, a Jet movement and an awesome case back engraving. This was an age when watches had a practical use and not the jewelry that they (sometimes) are today.

The case is made entirely in SS, it is about 37mm and has a simple dial, three hands and no date. The lug hols make changing the original SS bracelet changes so easy! In fact this is a watch that looks good no matter what strap you throw at it: nato, mesh, leather, even rubber. The winding crown is also SS and it is unsigned. At first sight it is very similar with the Parawater I told you about, but this one is not made for water use, but for aviation?. An indication of the link to the aviation is the Jet airplane engraving on the back and the Professional label on the dial. Also a Jet logo is printed on the dial too (Jet movement). In fact the dial has 12, 3, 6 and 9 printed, and the markings: “Citizen Jet, Para Water, Professional”. The hour markers are trapezoidal,  raised and polished. They are filled with (now) the beautifully aged luminous material and so are the matching dauphine hands. All things considered it is a beautiful, simple, balanced face that I like a lot! I have seen very few examples of this model and some of them have an arrow shaped hour hand and a thicker minute one with a flat tip.

The movement is the usual Jet movement with a circular swinging rotor. It runs at 18,000bph as all of them do. This one is the first one made, launched a few months earlier, in October 1961. My watch in made (3-4 months later) in March 1962. It is an automatic (hand winding also possible) with non hacking sweeping central seconds hand. It is called Citizen calibre 3010, Jet movement, and was the first movement that Citizen produced in relatively high numbers. The interesting fact about the rotor is that in earlier types it is marked “Automatic” rather than the usual “Autodater”. The date was added a year later, and so did the name “Autodater”.

And to add to the story… the clasp is marked: “Easy-O-Matic, Citizen Band, Pat.Pend. Stainless Steel” making it even more interesting if that was even possible. 🙂

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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/