Citizen “Bull Head” Chronograph 4-901096-K


One of the Citizen mysteries, for me, gravitated around this very model. It is not only a very elusive watch but a beautiful one too! I have seen a few pictures that made the dial look bright green and in others looked a little bit towards golden brown. So I had to have them both to see myself how they look in real life!

citizen bullhead chronograph vintage

Finally I found two, both in excellent condition. So, here came out the magnifying glass, the photo camera and I kept on looking at one and then to the other in all lighting condition and from all the angles. In the end the conclusion is:

  • same case: 6N-4W-S, case back, pushers and crown
  • same model no: 4-901096-K
  • same movement: Citizen cal 8110A
  • same date and day wheel (English – Japanese)
  • same dial code: JAPAN 8110 – 901166 KA
  • same dial color – green, BUT… different shades of green

In fact most of the times they look almost the same, but from time to time, they look like in the picture above. So… why this difference? I do not know for sure. Based on the serial no, both these watches were made in the same day or very close together because they are only about 60 watches apart. My opinion this far is that the paint used had a slightly different proportion of ingredients. The simplest explanation is most of the times the correct one. If any of you guys have another point of view regarding this, please let me know! Maybe sun exposure, patina or…?? One day we might find out.

Update 2017 September: A NOS full package watch, box and booklet. The strap is the original Citizen rubber one. The price at the time was 23,000 JPY. (pictures from the online seller)

Meanwhile… read more about vintage Citizen bull head chronographs HERE.

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Citizen Alarm Date Custom V2 Blackie


Without a doubt this is one of my all time favorite alarms! Sporty, great wrist presence, complicated, beautiful and useful! Here it is the NOS, black coated, 1971 Citizen Alarm Date Custom V2 blackie! (model  4-310179Y)

I wrote a few articles about Citizen alarms powered by this movement so the data is the same: a hand wound movement, calibre 3102 (date), 21 Jewels, 18,000 bph. The twin crowns are for time setting and winding the main spring and the other one for setting and winding the alarm. The crown at 2 o’clock in first position is winding the alarm while the alarm is deactivated. If you pull it in the second position you can set the alarm (counterclockwise) and the alarm is activated. Pressing it while the alarm is ringing will stop it. The crown at 4 will wind the watch and pulling it out will set the time. The alarm will ring for about 13-16 seconds.

citizen alarm date custom v2

The case is black coated and so is the bracelet. Read about another beautiful blackie V2 HERE. The three crowns, the bezel and the case back are made of stainless steel and are polished.

The dial is gorgeous, black, with applied luminous hour markers that are still glowing today. The date is located at 3 o clock, in a white frame, and is printed in white on a black date wheel. The second hand is orange and we have one more color, yellow, used for the inner bi directional rotating bezel. This bezel is operated by the third crown, the one located at 10 o’clock. You can use this feature for easily reading the elapsed time, up to 60 minutes, just as you do with your usual diver.

Read more about other alarms on the dedicated page HERE.