Black Roman Numeral Automatic Citizen cal 6501


Because I will sell it in a few days, I thought I should write a few words about this watch before letting it go. It is not the highly desirable diver or chronograph, but a fair, beautiful piece. What I like the most about it are the roman numeral used for hour markers on the dial. I don’t see many Citizen to use them.

citizen automatic black coated

It has a round black coated case with a stainless steel polished bezel. The crown is sign CTZ and is used for manually winding the movement (21 Jewels, calibre 6501) and setting the date and time. The day changes by advancing the hour hand passed midnight. All the fonts are black with the exception of Sundays that are written in red. The fact that the price tag is still attached on the replacement strap (the old one was destroyed beyond repair by time) and the case back sticker are a welcomed bonus for any collector.

So, bottom line…we have here a beautiful dial, a nice shape and black color case, NOS condition vintage automatic Citizen.

Read more about other simple Citizen watches HERE. (some of them are very rare and collectable)

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Diamond Flake, Diamond Flake Date, Flake Date


Diamond Flake… yes… the famous Citizen Diamond Flake (DF) had two younger brothers, the Diamond Flake Date (DFD) and the Flake Date (FD). The older, well known brother held the record of the worlds thinnest three hands watch, with a a movement as thin as 2.75 mm. Now, that is slim indeed! Citizen named this calibre 0700 and had 25 jewels and was gold plated.

citizen diamond flake dateAll three of them are made of stainless steel and are powered by the same base manual wind movement. The crystal is acrylic and the dial is simple and elegant for all of them. Obviously the DFD and FD have a date complication that adds some thickness to the overall appearance of the watch. This can be easily seen in the picture below.

citizen diamond flake, date flake

The shape of the lugs and the lugs width are also different. The crowns are similar and are not signed. On top of the added date, the youngest of the three are also marked Parawater for 40m.

diamond flake, diamond flake date, date flake

The case backs give clear indication to their age: 1963, 1964, 1966. The middle one had a beautiful diver engraving (the Parawater logo, not an indication that you should take it diving). The movements look almost identical but the third one is no longer gold plated and it only has 22 jewels.  The first one is Citizen calibre 0700, the second calibre 2700 while the last one is the calibre 2710 and it is no longer marked Diamond Flake. They all run at 18,000 bph.

citizen diamond flake thin watch diamond flake date flake

All three are beautiful watches, simple and elegant and a nice addition to any Citizen collection. Even though the DF is the famous one, the youngest two (DFD and FD) are more rare and more difficult to find in a good condition.

If you want to read more about the oldest one, the DF, click HERE.

Complete Vintage Citizen 150m Divers


No Citizen collection can be considered a real collection until a 150m diver is included. This is the most recognizable diver line in vintage Citizen so sooner or later for sure one model will come up for sale, just in time for you to grab and never let go. In fact there are 7 different models that to the untrained eye look almost identical. One for every day of the week, I would say. Well.. now that you have one, you will soon feel the urge to get another one and another one, and then a better condition fist one, that you already have, and another one. Without even realizing, it soon becomes an obsession, to have them all, and to have them all in top condition! The hunt is on!

So, it is my pride and joy, my pleasure to introduce to you the entire 7 watches collection! 

vinatge citizen divers 150m

Let me tell you about them, in chronological order, starting from 1967 up to 1978:

  1.  Citizen Super Auto Dater, SADS 52801-Y was made in June 1967. It is my favorite. What is there not to like? It has a unibody case (the case back doesn’t come off), it has a top of the line 39 jewels Jet movement, calibre 1150, (read about Jet movements HERE) and it is marked Professional Parawater. The crown threads are on the outside of the crown tube. The case is shaped differently and it shows that a lot of effort was placed into designing and producing it. I just love the angles and the contrast between the brushed and the angled polished surfaces. Read about this model HERE. Is is on a Tropic strap. I didn’t see any on bracelet. I hardly saw any at all in fact. 🙂 Super rare!
  2. Citizen Crystal Date, AUDS 52802-Y OR-O was made in My 1968. Did you ever see a better case back? Maybe you think you did, but take a look at this one! I am sure you will love it! The hands are different then the rest because there is no “Mercedes” style hour hand. The mesh bracelet is awesome, the crown is as it is for the first model and starting with this model the top part of the case has now a circular brushed finish rather then a longitudinal one. The uni case was dropped and starting now the case back screws into place. Starting with this model the Jet movement was replaced with a centrally mounted swinging weight. This one has the most beautiful aged lume. Read about that HERE. The movement is the Citizen automatic calibre 5410.
  3. Citizen Diver OR-O B52806 or 62-5370 are the same model but the first one is the one to have, because of the beautiful engraved case back. The 62-5370 is made for domestic market and the B52806 for export. They have different case backs, different hands sets and dial codes even though they share some of these features sometimes. The second hand tip received a luminous ball for better visibility (The 62-5370 can be found with a simple second hand too) The only thing that is constantly different is the case back. The movement is Citizen cal 5470. I had to chose between these two and I decided in favor of the first one. You can’t beat that awesome diver engraved case back! It is marked water proof in a period when the term Parawater was about to… unfortunately disappear. Is was made in ’69-’70 but the exact period is impossible to determine because it has no serial no. The 62-5370 on the other hand, has one and the manufacturing date can easily be seen. Read about these two variants together HERE.
  4. Citizen 150m 68-5372, 4-740131-Y is made in May 1971. It is still marked “parawater”, for the last time in this line. Read about “parawater” HERE. Starting now the case is different again and the crown has the threads on the inside, not on the outside of the crown tube. It has a different shape too and it is made in stainless steel. The previous ones I think are only capped in SS. And this is when the case backs became… well… displaying a lot of information but… boring. It is powered by Citizen calibre 7470. vintage citizen 150m divers
  5. Citizen 150m 4-722410 Y is made in October 1973 and is the only one displaying the date as well as the day of the week. The movement is from the leopard family, calibre 7200. That is always nice to have. You can read about it HERE. The bezel insert got a thin crystal layer on top of the luminous dot making it more resistant to water and normal usage while giving it a special look with a black ring around it. The sweeping second hand is straight again. And, as I said before, no more “parawater”, time for internationally common used “water resistant”.
  6. Citizen 150m 62-6198, 4-600851 Y is made in June 1974 and got a luminous marker near the date window. Pay attention to the fake “aftermarket” bezel inserts that you can learn about HERE. The date can be printed in red and the rest is, more or less, the well known design we grew to love so much. The bracelet is the H style links. Read more about it HERE. The movement inside is the Citizen calibre 7000.
  7. Citizen 150m 52-0110 is one of the very first Citizen watches I had. It is in fact my birth year watch and my month also. 🙂 It is made in July 1978 and marks the end of an era, 1978, the last year for vintage Citizen watches. It is the the one that started this hunt a few years ago. It comes in various forms, even with an orange dial, maybe blue one? maybe an orange dial and blue bezel insert? (I think the “blue bezel inserts are in fact faded and originally black) Two dial variants 1977 and 1978 that you can read about HERE. You can also read more about this model HERE. The beating heart is the well known Citizen calibre 8210. 150m citizen vintage divers copy

And… the rest is history. 🙂 I hope you found you perfect 150m diver and if you didn’t, don’t give up, I promise you you will love it and the wait is worth it!

Read more about other awesome Citizen divers HERE.

PS – who knows… one day I might find out there is another one and maybe another one… So far, these are all I am aware of. 🙂

Vintage Citizen Watches Lume Patina


From Wikipedia, the free encyclopedia:
“Lume is a short term for the luminous phosphorescent glowing solution applied on watch dials. There are some people who “relume” watches, or replace faded lume. Formerly, lume consisted mostly of radium; however, radium is radioactive and has been mostly replaced on new watches by less bright, but less toxic compounds.

Common pigments used in lume include the phosphorescent pigments zinc sulfide and strontium aluminate. Use of zinc sulfide for safety related products dates back to the 1930s. However, the development of strontium oxide aluminate, with a luminance approximately 10 times greater than zinc sulfide, has relegated most zinc sulfide based products to the novelty category. Strontium oxide aluminate based pigments are now used in exit signs, pathway marking, and other safety related signage.

Strontium aluminate based afterglow pigments are marketed under brandnames like Super-LumiNova, watchlume, NoctiLumina, and Glow in the Dark (Phosphorescent) Technologies.”

vintage citizen diver lume

Vintage collectors grew up to appreciate a beautiful aged lume on their watches and a rich yellow patina, orange or brown is always desired if original and natural. Even some modern watches (Jeager leCoultre and Omega, to name a few) are made with “fake” patina, yellow luminous material. Some of the dials are called “tropical” because they also changed color in time due to exposure to sunlight in tropical areas (usually). Some say that the Sun is not the main factor to this process but the passing of time and the original formula of the pigments. Either way, I love a beautiful patina too, just like most of us. Most of the dials that age are made with radioactive material, like tritium or radium.

citizen-150m-diver-vintage

Citizen never used radioactive material on their vintage watches (1932-1978) but used some Promethium-147 after this date on some models but only for a few years. I am still looking for a watch made prior to 1978 that has it. It should be marked on the dial code P-JAPAN-P. They used this in small amount so the patina is only slightly influenced by this. I found this in a Citizen diver instruction manual: “Luminous Paint: Being a diver’s watch, luminous paint is used for this diver’s watch (200m) to facilitate time readability in a dark place. This luminous paint contains a trace quantity of radioactive substance pursuant to ISO safety standard. There is no problem for normal use; however, in the event that the watch glass has been damaged or broken, immediately carry it to the store where you purchased or to an authorized Citizen Dealer.” So, there are only traces of this material. No need to worry for radiation.

citizen 500m chrono master diver vintage

Most of the lume of vintage Citizen is still glowing brightly in the dark even today and keep, more or less, the same color as they had when they were made. Only a few of them get the desirable patina but making them so rare only makes the reward of finding one even greater. So, good luck finding the perfect Citizen patina! 🙂

UPDATE: Well… it seems that I had one 1978 diver with P-JAPAN-P 🙂 Read about it HERE.  Another watch I love, but it is made after 1978, is the Walter Wolf titanium fly back chronograph that you can read about HERE.

Citizen Date Flake


Yes, it is called Flake but it is not the same with the Diamond Flake that I wrote about HERE. This one is thin indeed, but because it has a date feature it is not the thinnest. Either way, it is a beautiful simple watch.

citizen flake date

This model was made in the mid 1960’s, and mine is from 1966. It comes on a bracelet and is made entirely of stainless steel. The dial is simple, with applied polished hour markers and a date window at 3 o’clock. Nothing fancy about it, just one honest, clean, timepiece. The movement, calibre 2710,  is a hand winding one and has 22 jewels. There is one more version, the Diamond Flake Date that has 25 jewels. I will write about that one later. 🙂

Read about the three brothers: Citizen Diamond Flake, Citizen Diamond Flake Date and Citizen Date Flake, HERE.