1985 Omega Chronograph Caliber 861............what Do You Think?

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The bracelet is definitely growing on me and it's just my small wrists that don't show enough of it. The leather strap has found a new home on my old Constellation, which was my previous daily wearer.

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This is up on eBay:
http://www.ebay.com/itm/311993108818
I picked up a silver dial model with full kit, a few months ago, from Japan but from a different eBay dealer. It was my first purchase from the Asian market and I was very pleased with the speed of delivery and the fact that the description was completely on point. Should be back from the spa in a couple of weeks.
 
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I'm really happy with mine and glad to have picked up a bracelet, so it's silver all over now just like your one. Since coming back from the service it has kept perfectly consistent time at +10 seconds per day, every day.
 
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I’ve seen alot of the steel versions of this watch so i just wanted to share a picture of my newly accuired beauty.

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I’ve seen alot of the steel versions of this watch so i just wanted to share a picture of my newly accuired beauty.

9e07d277-b885-4922-927e-63ca96ad9fe3
Nice! The gold version is quite classy. I always thought the 36mm size would make this look good in gold.
 
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Thank you bilko, this will be my new beater too.
Actually i got it doubts when i was comparing with your card 😁
The watch itself looks pretty to my knowledge, everything is fine, not yet open the case back though. My speedy fois will probably have to stay in the box for a pretty long time 😀
Hopefully someone has information about the card 😁
I don’t know if you still want information about the card. This watch was originally purchased in Japan at very well known high end department store called Yokohama Sogou in Yokohama, Japan. It is a trusted store and the card is genuine in my Japanese eyes. Hope you are enjoying your watch. I have the same watch which I purchased in Japan.
 
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This one has finally been united with a stainless steel bracelet. I've been quietly looking for a couple years, but finally managed to find an unused example that still had the plastic covers on at a great price.

Super nice.......love the bracelet.
really match well with overall watch 👍👍👍
 
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I didn't even know these existed until I was offered one and decided to go for it. Here's mine, stainless steel with a black dial (and a temporary strap). I'm really loving it's classic look and the 861 pedigree.

 
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Really curious that your one says 18 jewels, whereas mine says 17 jewels, despite being from that time when the 861 was using 18 jewels. It's not quite clear why Omega did this, however it was seen in other references as well around that time. I am guessing they continued to use the old 17 jewel plates while they were in stock, suggesting your 861 was one was one of the very last made.
 
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Really curious that your one says 18 jewels, whereas mine says 17 jewels, despite being from that time when the 861 was using 18 jewels. It's not quite clear why Omega did this, however it was seen in other references as well around that time. I am guessing they continued to use the old 17 jewel plates while they were in stock, suggesting your 861 was one was one of the very last made.

That's interesting. Is it an actual 17 jewels (if it's even possible to tell) or a 18 jewels with an older bridge? Seems weird for Omega to just slap an older, non-matching bridge because it's still in stock.
 
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The 861 was originally 17 jewels, however they switched to 18 jewels at some point in the 1990s I recall. I believe all of these were 18 jewels, however all the examples I've seen to date have been marked as 17 jewels. All of this was in the lead up to the 1861.

The 18th jewel is visible, but I gather of little real benefit and one might even suspect it was added more for marketing purposes.

There was an earlier thread where this was covered:

https://omegaforums.net/threads/861-movement-in-a-4835xxxx.82387/#post-1058764
 
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The 861 was originally 17 jewels, however they switched to 18 jewels at some point in the 1990s I recall. I believe all of these were 18 jewels, however all the examples I've seen to date have been marked as 17 jewels. All of this was in the lead up to the 1861.

The 18th jewel is visible, but I gather of little real benefit and one might even suspect it was added more for marketing purposes.

There was an earlier thread where this was covered:

https://omegaforums.net/threads/861-movement-in-a-4835xxxx.82387/#post-1058764

the 18th jewel started to be present on the 861 and lemania branded ones in 1989 or so. The 17 jewel mark on the movement oersistedted for a year or so. You can date 1989-1990 watches by having 18 jewels but marked 17.
 
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I seem to recall serial number on mine was later than that, yet still marked at 17 jewels. It was originally sold in 1997.
 
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I seem to recall serial number on mine was later than that, yet still marked at 17 jewels. It was originally sold in 1997.
That does not match my observations of the omega and lemania versions of the movement.
 
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I just Googled it and the top result said:

"The Omega caliber 861 is based on a Lemania movement, just like the 321. What is unique about the movement is that it uses a cam / shuttle system for operating the chronograph, instead of the more common column-wheel structure. The movement used 17 jewels until 1992, and from the year of 1993, it used 18 jewels."
 
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I just Googled it and the top result said:

"The Omega caliber 861 is based on a Lemania movement, just like the 321. What is unique about the movement is that it uses a cam / shuttle system for operating the chronograph, instead of the more common column-wheel structure. The movement used 17 jewels until 1992, and from the year of 1993, it used 18 jewels."
Yeah that is bad info, that reflects the markings on the movement, not the presence of the actual 18th jewel. Its pretty well documented that 1989 was the first year of the 18th jewel, and was not marked as such until late 1992. This also caused some confusion in regards to the 861 and 1861 and the thinking the 18th jewel not being present until the 1861.

Unless you want to argue with extracts from the archives for multiple watch brands that use that movement. The 861 was also used by SINN in some 903's with Lemania branding. These also share the 18 jewel marked 17 jewel oddity from 1989-1992 or so.

all of the results for one of the Speedmaster Dates the "Speedmaster Yeman" states it has a 3304 movement in it that is NOT a 7751 movement, when it is in fact a 7751 movement and not a more simple eta, or a piggy back, or a Frederic Piguet.
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