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Post by estrickland on Mar 8, 2014 9:40:07 GMT -8
Around 10000yen more expensive that the base model 45xx GS and 1000 more that the base 61xx GS, oh and the same price as your 6159! Yeah, these were flagship pieces for Seiko - and the no-date 31EL 010 is my favorite. Thanks for the pic! Saving it. Oh, and that diver is a May '67 6215-7000, the predecessor to the 6159.
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Post by bobbymike on Mar 9, 2014 12:51:59 GMT -8
Nice, I would wear that.
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Rod
WS Benefactor
Posts: 2,213
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Post by Rod on Mar 9, 2014 13:39:53 GMT -8
Around 10000yen more expensive that the base model 45xx GS and 1000 more that the base 61xx GS, oh and the same price as your 6159! Yeah, these were flagship pieces for Seiko - and the no-date 31EL 010 is my favorite. Thanks for the pic! Saving it. Oh, and that diver is a May '67 6215-7000, the predecessor to the 6159. Notice the crown differences! strange that the no-dat would have a different case/crown, maybe just the photography!
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Post by seikoholic on Mar 9, 2014 14:46:20 GMT -8
Interesting little caliber, for sure. Kudos, mad respect to anyone who appreciates these. Great job on the clean up. Love the marker style. As you said, not much love. If you posted about a 6309 you just cleaned up, we'd already be on the 2nd page... lol I became a little obsessed with these awhile back, and began adding them to my collection. These things were pricey when new, nowadays, not so much. Every time I see one, which isn't often, there's a scrum for it. I'd LOVE to add one to the box, if I could find one...
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Post by SpinDoctor on Mar 9, 2014 15:36:25 GMT -8
Its interesting to see Seiko so heavily invested into an electronic balance wheel caliber at the same time as the dawn of quartz.
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HiBeat
Global Moderator
SEIKO Iko Iko GDTRWS
Posts: 8,660
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Post by HiBeat on Mar 9, 2014 17:24:53 GMT -8
I've seen these on the Bay for a while. Some of these photos above, including the OP's pic, are downright gorgeous.
Does the second hand have a step motor that moves the sweep second hand at 1 tick per second ? Or more often a la mechanicals?
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Post by estrickland on Mar 9, 2014 18:26:38 GMT -8
More often a-la mechanicals, 6hz in the case of the 3102.
In my understanding, these electric watches behave just as mechanical watches, but the balance wheel is driven by a battery and a set of solenoids instead of a mainspring/winding assembly.
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cobrajet25
Needs a Life!
"Underweared curmudgeon!"
Posts: 3,357
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Post by cobrajet25 on Mar 10, 2014 1:23:23 GMT -8
Not solenoids per se on the 37s...it's magnetic fields. The balance is actually a double-balance, with one balance wheel above a magnetic coil and another below regulated by a traditional hairspring. There is a small, oval piece of steel attached to the balance wheels, and this piece of steel is alternately attracted and repelled by the magnetic field created by the battery/circuitry in such a way as to approximate the motion of a regular spring-driven balance wheel. From there, the escapement and train wheels are the same as a regular watch. The regulator is the same as is found on any other watch, and functions to shorten or lengthen the balance's travel along it's rotation just like in a spring-powered watch. Most spring watches will gain or lose a little time depending on their "state of wind", but these do not since the input force is constant as long as the battery has charge. Here is a 3703 balance to give you an idea of what I am talking about... The oval bits on the balance are the steel portions which react to the magnetic field. Always been curious about how a 31-series operates. Is it really solenoids?
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Post by estrickland on Mar 10, 2014 12:30:14 GMT -8
Here's a picture of the 3102 movement: I read solenoids somewhere, but they might have misread those coils. Digging...
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Rod
WS Benefactor
Posts: 2,213
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Post by Rod on Mar 10, 2014 23:50:31 GMT -8
They do use an escapement just not in the usually place….see pics, yep i know this is the 3302, but the system is the same. tic tock tic tock
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