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Innovative Citizen Crystron 1975 with LED Flashing TIME SET

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cybr

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Innovative Citizen Crystron 1975 with LED Flashing TIME SET

Post19 Dec 2017, 03:40

Together with a bunch of quite rare watches, I have received the following one WITH A QUITE INNOVATIVE LED APPROACH FOR EARLY QUARTZ WATCHES + A SETTING button existent previously only in the Citizen Cosmotron 7803A Movement – the Special Version
https://sweep-hand.org/2013/11/28/cosmo ... l-version/

But the Quartz Crystron 1974/1975 with LED Flashing and with a PUSH button at 8 HOUR - basically the Citizen 8600 movement, had some NEW/INNOVATIVE approaches, like:
- to flash THE LED when the second hand reach 12 Hours indicator! :grin1:
but even more:
1) if an Hour Signal was provided by a Radio Station and the second hand is between 31-59 seconds...the 8 HOUR BUTTON will simply RESET the second hand to the correct time!
2) if an Hour Signal was provided by a Radio Station and the second hand is between 01-30 seconds...a push on the 8 HOUR BUTTON will frozen the second hand + the LED indicator will flash EXACTLY the number of seconds remaining until the CORRECT TIME!!! After that moment the second hand will start to move again!! :grin1:


One can see it at work, in an Youtube movie (NOT my watch!) below:
https://www.youtube.com/watch?v=hlH9yVTxc_w

and now, some pictures of my recently arrived watch, sporting now another Roberto Cavalli genuine Python strap: :grin1:
Image
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Regards,
:dwf:
PS. I already know that was already available a Seiko Cal. 3922/3923 in 1972-1974 with a pulsating power indicator light (LED), but those watches HAVE NOT a QUICK TIME SETTING button/approach! :grin1:
Image from https://shop.r10s.jp/procontact/cabinet ... 826756.jpg
Image
Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)
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cybr

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Re: Innovative Citizen Crystron 1975 with LED Flashing TIME

Post09 Mar 2018, 23:23

Since I have seen an unexpected accuracy (less than 3-5 secs/month in the last 2-3 months) of this early Citizen Crystron Quartz watch with flashing LED with 8600 movement (cca 1975), I have started to do some online searching about the Citizen 8600 Quartz movement from 1974-1975.
1. It seem that is the direct "child" of the following calibers:
"The first quartz watch to be released by Citizen in 1973, calibers 8810B E.F.A., 8811B and 8821B. Caliber 8810 has an extra fine accuracy (E.F.A.) of five seconds a month. Special attention should be given to the bayonet-catch on the back of the watchcase."
https://doensen.home.xs4all.nl/j63.html

2. But its ARCHITECTURE has much more in common NOT WITH THE PREVIOUS 1973-1974 CITIZEN 8810 movements, BUT with the revolutionary AND VERY EXPENSIVE EVEN TODAY Quartz movement Citizen Crystron Mega - 4 Mhz(!!!) 8650A, launched also in 1975, with whom it shares a quite similar architecture and 7 jewels, as one may see in the following photos:

A. Citizen Crystron Quartz 8600A Movement - cca 1975
Image from http://www.thewatchsite.com/21-japanese ... g-led.html
Image

VERSUS

B. The VERY EXPENSIVE 1975's High Precision and ULTRA RARE Citizen Crystron Mega 8650A - 4 Mhz movement (Accuracy = cca 3 secs/YEAR!!! - https://doensen.home.xs4all.nl/j31.html)
Image from http://forum.watch.ru/showthread.php?t=397595
Image

Please look at the amazing similarities in the design of the above pictured and EARLY Citizen Quartz movements - 8600A versus 8650A - from cca 1975!!!
So what do You think: shall we call the Citizen Quartz 8600 movement the TRUE AND direct ancestor of the AMAZING (even today!!!) Citizen MEGA 8650A - 4 Mhz MOVEMENT ??? :scratch:


Regards,
:dwf:
Last edited by cybr on 12 Mar 2018, 14:38, edited 2 times in total.
Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)
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cybr

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Re: Innovative Citizen Crystron 1975 with LED Flashing TIME

Post12 Mar 2018, 14:22

And even more, the FIRST SOLAR QUARTZ watch with HANDS: Citizen Quartz Crystron Solar - 1976, have used a quite similar (derived from the year 1974/1975 8600A movement ? :scratch: ) movement, the famous 8620A movement!
"1976 -The first watch with solar cells and hands, the 'Citizen Quartz Crystron Solar' caliber 8620A reaches the market of Japan in August. It was a normal quartz watch with four double silicium solar cells and a stepping motor. In 1974, some periodicals had already published photographs of a solar watch with hands, these are only prototypes."
https://doensen.home.xs4all.nl/n3.html
Images of a 8620A/8629A movement and the FIRST SOLAR QUARTZ watch with HANDS, from the excellent Piotr's website, http://www.crazywatches.pl/citizen-crys ... uartz-1976
the movement
Image
and the watch
Image
Regards,
:dwf:
Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)
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dutchsiberia

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Re: Innovative Citizen Crystron 1975 with LED Flashing TIME

Post19 Mar 2018, 15:48

Funny, the watch shown on thewatchsite is still in my posession, crystal fell out again and got damaged unfortunately.
I've also got some solar citizens, including this almost unused example, needing some repairs and a "lube job".
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cybr

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Re: Innovative Citizen Crystron 1975 with LED Flashing TIME

Post19 Mar 2018, 19:25

dutchsiberia wrote:Funny, the watch shown on the watchsite is still in my posession, crystal fell out again and got damaged unfortunately.

Sorry, but now I've seen that the same nickname - dutchsiberia was used ALSO on that forum -the watchsite -for the cited posts...so the watch is one from Your outstanding collection...
I hope that are no hard feelings...since I've cited the source of the image... :scratch:
Otherwise, outstanding and rare watches, man!!! :Prost:
Regards,
Last edited by cybr on 19 Mar 2018, 20:31, edited 1 time in total.
Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)
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dutchsiberia

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Re: Innovative Citizen Crystron 1975 with LED Flashing TIME

Post19 Mar 2018, 20:29

No worries, it's all for the good cause :)

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