Citizen Chronograph 67-9071 ‘Monaco’ – More than a restoration!

I’ve just published a new page featuring more of Brian Leiser’s excellent work – this time he has built a 67-9071 from parts I supplied. And, of course, he’s done a superb job! From two rather sad non-runners, along with some very nice NOS parts I was able to supply, I now have a very  nice example of this rare model – and with Brian’s expertise it’s running beautifully and will now do so for many years.

Here’s the page, I hope you enjoy Brian’s account, which he kindly supplied along with many photos and notes – thank you Brian 🙂

https://sweep-hand.org/brians-restorations-the-citizen-67-9071-monaco/

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It’s been rather quiet here over the summer, but….

I’ve been busy over recent months with lots of non-watch related stuff, but that’s going to change soon! I’ve just got something back from master watchmaker Brian Leiser…….yes, he’s worked his chronograph magic again 🙂  This time on one of the rarer models, a 67-9071 ‘Monaco’. He’s done a great job – as always – and has provided pics and notes on the build (not just one of those simple restorations 😉 ) so I can do a full account.

Here’s a teaser for now:

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Not Had a Reply?

I’ve had some issues with email over recent weeks, so if you have contacted me with a question and not had a reply could you please get back to me.  Apologies if this has happened to you, but I’ll try to reply asap if you try again.

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This Week’s Featured Watch #79 – the Citizen Jet Monthly

Many people may be familiar with Citizen’s vintage ‘Monthly’ watches, which use the 5270 movement and were produced in the late 1960s. They are also found in the guise of the ‘Moon Dater’, which was the export model. However, Citizen produced a slightly earlier Monthly model, using the 4101 ‘Jet’ movement – and this model is much less known, and is a rare beast.  Made only in gold plated cases as far as I know, mine is of the white gold variety:

As can be seen this Monthly is part of the ‘Seven’ auto-dater line, using the 19 jewel version of the 4101 calibre. Unlike the 5270 monthlies, the month window is placed at the 9 o’clock position and is manually turned by the crown at 4 o’clock. The month wheel runs over the date wheel and is perforated so that the date can be seen through it.

The serial number shows production in August 1965, and ‘WGP’ refers to the case plating:

This is a large watch for its time, measuring 40mm across the case and the same lug to lug. It is also over 12mm thick, perhaps reflecting one of the reasons Citizen moved to the more compact oscillating weight movements for its automatics.

The size difference is more apparent when placed alongside a more conventional Jet model:

The 4101 movement beats at 18,000 per hour and can be manually wound, without hacking. The time is set by pulling the crown out one click, whilst the date is set by pulling in and out at the second click. The day is set by winding back and forth between 9 and 12:

It would have come in a box like this originally:

And finally a closer look at the dial and hands:

 

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This Week’s Featured Watch #78 – the 4-900014 Chronograph

One of two of Citizen’s chronographs with case number only, i.e. no model number, this is a single register ‘Challenge Timer’ model which is driven by the 8100A movement (‘A’ is for Automatic, there’s no ‘B’ version 🙂 ).  Both the twin register 8110A movement and the 8100 were introduced in 1972. As with the 8110, this type has 23 jewels and uses the central sweep hand as the second counter, whilst the sub-dial counts minutes. Otherwise its features are the same, running at 28,800 beats per hour with hand winding and ‘fly-back’ (instant reset and restart of chronograph function without having to stop it first).

This model has a steel case with black coated alloy bezel. Two dial designs were produced as far as I know, the other having a silver sub-dial – the black sub-dial on this example is rather more subtle. The case is polished – I believe this is correct since two models shown in a 1974 catalog show one with a polished case, the other with a satin finish:

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The dial and hands create a very legible face, and the highlights on the sub-dial give some colour and interest. The case back gives a production date of May 1972, so this is an early one:

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Good examples of the 8100 are not easy to find, rather like some of the lesser known 8110 models. Unlike the 8110 models, I don’t recall seeing any made after 1974, so they had only a limited production run and fewer will have been sold as a result.

For more information on all Citizen’s vintage chronographs, here’s a link to my reference page: https://sweep-hand.org/citizens-vintage-chronographs/

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Citizen 67-9011 (aka ‘Bullhead’) Original Day and Date Wheel Colour

Following my last post asking for help in researching original colours for the 67-9011 models, I think it’s time to publish my theory! I only got five responses to my questions, for which I am very grateful, so I guess this isn’t backed up by extensive data, but I think my theory makes sense. One of the people who replied has the same model I have which is pictured in the previous post, and like mine his has white Arabic / English day and date wheels – and we both believe these are original.

My opinion is that white day and date wheels were original to the 67-9011, for certain language combinations. At the moment this relates for certain only to the Arabic / English combination. This is supported by the part numbers for this model, where the date wheel has two alternative part numbers. If only black were original, then there would only be one part number. And this is backed up when other models are looked at – the 67-9119, the 67-9020 and the 67-9143 also have two part numbers and I know for sure that they were originally produced with black or white day/date wheels. The 67-9020 and 67-9143 are both ‘bullheads’ of course – the part numbers for them are the same as the 67-9011 so they must also be black and white options for that one. Here’s the relevant parts page from a 1977 casing parts catalogue, where you can see the dual part numbers for the ‘date dial’ listed for the relevant models:

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I’m confident that this is a correct conclusion – all we need now is to determine whether there any white wheels used originally other than on the Arabic/English combo……

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A Question to Owners of the Challenge Timer (Bullhead) 67-9011

A question a visitor called Lawrence recently asked reminded me of something I have never quite got to the bottom of –  did the 67-9011 Challenge Timer, commonly known as the ‘Bullhead’, originally come with white day and date wheels, or only with black day and date wheels? Now this may seem a somewhat geeky bit of detail, and not exactly the ‘meaning of life’, but if I can answer this question I can add it to my guide to buying an original piece. I have my own theory about it, but I’ll keep that to myself for now 🙂

So, if you have what you believe to be a fully original example, I would like to know (a) what the colour of the day & date wheels are, (b) what the day wheel language combination is – this may give a clue to my theory! – and (c) what is the dial colour (i.e. one version had a black or grey dial and a printed, not applied, Citizen logo).

Although there are other versions of the ‘bullhead’ with the same case design, to keep it simple, at least for now, I want to stick to the most common 67-9011 model, with one of the following case numbers: 4-901177, 4-901053, or 4-901011. In the catalogue images I have of these models, the day and date wheels are black……

Here’s one of my examples of case number 4-901177 – as you can see it has white wheels, and the language combo is English and Arabic:

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It will be great to hear from anyone with an original piece – please remember to answer all three questions and use the comment facility for this particular post for your answers.

Thanks in advance!

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