Tag Archives: Vintage Citizen Chronograph 8100A

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 … Continue reading

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This Week’s Featured Watch #63 – the 67-9631 Chronograph

Citizen’s mechanical chronographs from the 1970s are relatively well known, especially the ‘bullheads’ with the two sub-register 8110A movement. Known at the time as ‘Challenge Timers’ Citizen’s range of models also included single sub-register models – in fact these were the … Continue reading

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Should the Citizen 8110A and 8100A Chronographs Be Left Running?

This question has been asked many times before, and the advice is that the chronograph mechanism should be left running to minimise wear. The same applies to the Seiko 6138 and 6139 vintage chronographs. This advice relates to the design … Continue reading

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8100 Chronograph – 4-900014

For some reason Citizen didn’t give model numbers (i.e. 67-xxxx) to two of their chronographs. One is in the 8100 line, and carries the case number 4-900014. There were two versions and I’ve managed to acquire one of them: This … Continue reading

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8110 Intensive Care!

If you think a watch looks to be beyond both hope and help,  just take a look at this thread in the Watchuseek Seiko & Citizen Forum and especially the great work being done by ’31 Jewels’; http://forums.watchuseek.com/f21/citizen-8110-model-high-end-watch-617679.html

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Chronographs Page Published

I finally managed to finish the new page on Citizen’s automatic mechanical chronographs – thought I’d not make it before Christmas! I’ve included at this stage all models and their variants that I believe are original, so there may be … Continue reading

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This Week’s Featured Watch #17 – 67-9577 Chronograph

Following the 67-9038 in my last ‘Featured Watch’, it seems logical now to present the other  automatic chronograph line by Citizen, this time with one sub-dial. Both movement types were introduced in 1972 – the twin sub-dial being the 8110a … Continue reading

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