citizen crystal seven

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Citizen Crystal Seven para100mwater diver


Exactly one year ago I wrote about a fabulous watch, the Dandy Seven diver (read about it HERE) and here we are today talking about it’s brother, the Crystal Seven diver. They were made in the same period, they share the same line (Seven), the same movement, and the same style, but each stands proud as powerful individual watch.

crystal seven vintage citizen diver

It is a decent sized watch, with a modern look and a strong vintage feel; maybe it is the shape of the case, maybe the colors, maybe the entire watch. By the way, it is made entirely of stainless steel. The SS bracelet I doubt it is the original one but it suits the watch very well, with those blue highlights, that match the minute chapter ring color perfectly. The front part of the case is brushed while all the rest is polished.

It is a diver watch (para 100m water) and as any diver watch that respects itself it has a bezel. This one is an aluminum bidirectional friction type with a luminous dot on 12. The dial is beautiful, grey, with a sunburst effect. The hours are marked with luminous material. The hands had luminous parts too but on mine they must have fallen out and to this day it was not yet relumed. The second hand has a luminous ball too. The minute chapter ring is blue with white 5 minutes dots.

The movement inside is the Citizen automatic 5204 calibre, with 27 jewels. It can also be winded by hand. The winding crown is made of stainless steel and signed CTZ. It is not a screw-in type. Due to this movement, the watch displays both the day of the week as well as the date. The day changes by advancing the hands past midnight while the date changes normally in the second position of the crown. The movement doesn’t hack.

One thing that differentiates it from it’s brother (the Dandy Seven) is the mineral crystal (hence the Crystal Seven name). On the other hand, Dandy Seven it fitted with an acrylic one.

All things considered it is a beautiful, rare diver, vintage and somehow modern at the same time.

Read more about other vintage Citizen divers HERE.

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Citizen Crystal 7 – 33 jewels


Among the interesting vintage Citizen, this one has it’s special place.

It is the para water Crystal 7 with 33 jewels and a uni body case.

citizen crystal 7 33The watch is the perfect size for a dress one, not too small, not too large just as it should be even by today standards, at 37mm diameter. The case is elegant, entirely polished, made in one piece of stainless steel. That means that the case back can not be removed and the movement comes out only by removing the mineral flat crystal. This is a nice feature that makes the case a little more water resistant by eliminating the risk of water entering the watch through the back. Because the case back is the same piece with the entire case it is possible to place the beautiful engraving in such amanner that it is always crown side up. This is a nice bonus to the overall look of the watch. The engraving shows the water resistance by “para water” marking and the uni case body is marked by a small “x” inside a small circle. The model is ACSS 51401-Y and was made in April 1966.

The dial is silver, with a sun burst effect and a lot of applied markers. The hour markers are applied, the day and date frames are applied, the Citizen logo, the 7 logo and 33 marking are also applied. The “Crystal” writing is in black and so are the minute markers. The hour markers have a longitudinal black line just as the hour and minute hands. The overall look of the face is beautiful, silver with black, elegant accents. The only color used is the “SUN” in Sunday on the day wheel.

citizen-crystal-7-33 copy

The movement is the automatic (hand winding is also possible) 33 jewels Citizen cal 5204 ? , beating at 18,000 bph. It is a quick set date while the day changes by advancing the hourhand past midnight. It proved to be very good at time keeping; some people even say it is very close to Chronometer grade and Citizen Chronomaster line.

The strap is a replacement black leather Citizen strap with a simple stainless steel tang buckle. I think it fits the watch and adds to the overall elegant look.

Beautiful, elegant, classy day-date vintage Citizen.

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Citizen “Day-Date” Seven Star Deluxe 4-520068 T


This is a nice watch story about collecting vintage watches. 

Everybody knows what a NOS watch means, and this one is indeed new old stock, stickers and tags intact, but… the story is not so straight forward.

vintage NOS citizen 4-520068 T

This looks as the day it left production, a NOS Citizen watch, no scratches, clean sharp lines, perfect bracelet, no dirt, perfect acrylic crystal, perfect dial, perfect hands, stickers and tags. And we are talking about an old watch, made in 1969. Let’s see the watch!

The case is made of stainless steel, round, with straight lugs. Al the lines are straight, clear and bold. The watch is polished entirely. The crown is signed, as usually, “CTZ”. There is a perfectly integrated stainless steel bezel that holds in place the acrylic crystal. As you would guess, the crystal raises a little bit on the edges, but the surface is perfectly flat as parallel to one another as possible. The diameter is 39mm and it is “parawater”. (I love this Citizen trademark feature)

The dial is simple, grey, with a sun burst pattern with a date at 3 and the day at 12. Both the day and the date frames are applied and so are the Citizen logo (under the day frame), the baton hour markers (double for 12 o’clock) and the “7” badge at 6 (between the writing – “Crystal Seven” and “33 jewels”).

vintage NOS citizen 4-520068 T

The movement, and now the plot thickens, inside this gorgeous NOS Citizen is… the Citizen NOS calibre 5270, with… 21 jewels! What?! Why is it written on the dial 33 jewels and the watch model suggest it is a 21 jewels movement inside? How come inside is not a 5240 (for example) or another 33 jewels movement? I have an idea, but that will be in the conclusion. As for the calibre 5270, it is an automatic, with a nice black rotor, 21 jewels, that can be winded by hand also, with a day and date function.

The bracelet is a beautiful brushed with two polished longitudinal lines. It has folded links and closes with a beautiful satined (as most of the vintage Citizen should have) clasp. The clasp has a raised polished Citizen logo with sharp lines and edges.

vintage NOS citizen 4-520068 TConclusion: Just a beautiful, clean, honest design watch, but not so honest when it says on the dial that the movement inside should be 33 jewels, but in fact it is a 21 jewels calibre. So, my point of view regarding this is that the dial and the day wheel was changed at a later date. I wonder if the hands and date wheel belong to the watch or to the dial?  After all they are basically on the same base movement (5270 and maybe 5240). I might suspect that this is the way it was made 45 years ago.  So this is just a recent “marriage” watch, made from NOS original pieces. Unfortunately, watch collecting is not always easy. 🙂

Thank you Stephen for your, much more detailed answer, and your blog: http://www.sweep-hand.org: “You can see from this that the case number is for a Seven Star model, not a Crystal Seven. The model is a Seven Star Deluxe in fact with day and date window at 3 o’clock (I have a pic of that in a book, but I’ve not scanned it yet), which uses a 21 jewel 5270 movement. The dial design with a separate day window at 12 o’clock was used in the earlier Crystal Seven models up to 1968 as far as I’ve seen, so a production date of 1969 seems too late for that layout to me. So it looks to me that the NOS case and 5270 movement has been used with a NOS Crystal Seven dial and day/date wheels (I guess they would fit since it’s the same base movement) and although presented as an original NOS piece I doubt that this is correct.”