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1930s or 40s New Haven

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Just a couple of pics of a recent service.  Ran the movement in cleaning fluid for a week with a couple of fluid changes.  Lots of crud came off.  Polished the crystal and case, polished up a vintage band.  Oiled and running like a champ now.




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Thank you for this treat, I seldom see movements like this one so for me it's super intresting.
Since i like movement porn I have one question, on the first Picture one can see a Little lid in the opposite corner of the balance; I assume this is were the mainspring is. From the Picture it seems the mainspring doesn't have an barrel? Is it just a mainspring and one arbour under the lid?

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Yes, you remove the two screws, and the plate comes off exposing the main spring.  There is a main spring barrel there.  If I had a side shot you would see it.

Westclox and Timex are similar movement designs with only two plates.  This movement was quite easy to work with, especially how easy it was to remove the balance.

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I have a very limited experience from movements like these compared to Swiss movements.Lately I have mostly worked on TIMEX watches since they are common here too.
One have to admit they are just ingenious in their simplicity, even they are made out of pressed sheet metal they mostly after a service starts ticking, not the most accurate but still considering the construction impressive.
I have begun to buy all kinds of pin lever escapements too. For some reason I get amused of the challenges they present. If one is interested in learning about the effects of side and end shake they are a joy to observe. In a fault finding perspective they mostly offer a greater challenge too.
Thank you for your response and keep up with the great work...

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