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Buren movement designed for other functions?


DJW

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I was tearing down this Buren movement and noticed that there is a pinion for a separate gear. It is driven off of the hour wheel. The hour wheel does has a separate gear set underneath that drives whatever would be in this position. Would this be some sort of a date function? Movent is engraved ST 171 ... I could not find any information on this with any relation to Buren watch movements.

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If I wasn't clear enough about where it's located on the main plate dial side... It's the large circular recess with the pinion in the middle. Just off the hour wheel.

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After a little more research it appears that these movements were actually supplied by Seiko Corporation. I have found some very similar Seiko movements with the same dial side layout. And it does appear that there was some advancing wheel there for a date function that was not installed on this movement. I believe from the research I read that Seiko started a company called UT and supplied movements unmarked or E Bosh's to companies. I believe this is one of those movements. It also only Beats at 18000 BPH... Ones that are stamped Seiko all seem to beat at 21600 bph...

Makes sense now that the case was stamped Hong Kong. So now truly an international watch! a watch company that was based in Switzerland with a Japanese movement and a Hong Kong Chinese case:huh:

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After a little more research it appears that these movements were actually supplied by Seiko Corporation. I have found some very similar Seiko movements with the same dial side layout. And it does appear that there was some advancing wheel there for a date function that was not installed on this movement. I believe from the research I read that Seiko started a company called UT and supplied movements unmarked or E Bosh's to companies. I believe this is one of those movements. It also only Beats at 18000 BPH... Ones that are stamped Seiko all seem to beat at 21600 bph...

Makes sense now that the case was stamped Hong Kong. So now truly an international watch! a watch company that was based in Switzerland with a Japanese movement and a Hong Kong Chinese case:huh:

Thought i had seen it somewhere before. Its a Seiko 7625 or something like that? 

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Also you can see where the calendar advancement wheel is located in the same exact spot of the area in question that I had originally. Mystery solved! Thanks guys!

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I think this is the closest match..

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a&2uswk&Seiko_6105A

Also I wasn't sure if anyone other than Seiko had used this automatic winding movement, it has the magic lever type escapement shown in the pictures on this reference page at the bottom...

That ain't a 6105 movement. Not even a 7625 as i thought at first. That has no adjustable beaterror arm. 

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    • in general this shouldn't be any change. but in general questions like this it be nice to know the specifics of the watch in other words how was it performing before it was cased up and what is it doing now.
    • just as a reminder this watch is a Swatch group product. This will bring up a problem like spare parts and technical information. that I found some links to some information on when I talk about your watch and some of the technical and basically your watch is equivalent to 2834-2 for which I'm attaching the technical sheets. But equivalent does not mean exactly the same you want to do a search on the group for C07 as we discussed this watch before including the technical differences how it's supposed to be regulated and basically because it's watch group there is no parts availability. https://calibercorner.com/eta-caliber-c07-xxx/   https://www.chrono24.com/magazine/eta-movements-from-the-2824-2-to-the-powermatic-80-p_80840/ https://www.watchuseek.com/threads/h-10-movement-details.4636991/ eta CT_2834-2_FDE_481857_15.pdf
    • people be honest.... Swatch is evil for the watchmakers and repairers, BUT not everything in watches from Switzerland is from the Swatch-Group. As far as i know, Selitta got sacked by Swatch as a Movement-Assembler for them and they started to produce Movements in their own Name with slight Modifications. As far as i know, they sell Parts to the Market for their Movements. In most cases, if a ETA-Movement fails, it is a valid Option to replace it with a Selitta Movement, which i consider the Solution for this Mess with the Swatch-Group...... I have no Connection to anybody at Selitta, but being a Swiss-Guy, i still like to have Swiss-Made Watches, but not from the Swatch-Group.   ok ? regards, Ernst
    • Just one more greedy act by Swatch. They started a number of years ago here in the US..cutting off supplies to watchmakers that could build complications that many Swatch houses couldn't even touch. Old school masters who had gone through some of the most prestigious houses in the world. Otto Frei has some statements on their page about it. I tell all my customers to avoid new Swiss watches like the plague,..unless they just want an older one in their collection that still has some parts out on the market, or they have really deep pockets and don't mind waiting months and paying through the nose to get it back. Plenty of others to choose from..IE Seiko,..or other non-swiss brands Even a number of Chinese brands are catching up with the Swiss,..and I think that in time, their actions will be their downfall
    • Yes. If that's not what you are experiencing...start looking for something rubbing. A 1st guess is that one of the hands is rubbing against the hole in the center of the dial. Especially if you now have lower amplitude in face up/ face down positions.
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