Here a vintage watch from Doxa - a Swiss watch company founded in 1889 which still exists today (btw: "doxa" is Greek for "glory" or "honour").
The 14k golden case and dial:
And the movement -> An Eta 1147 which was highly modified by Doxa.
Here the case-side view with the screw balance already removed.
Teardown continued with wheel bridge removed:
The barrel bridge removed:
Dial-side teardown with keyless works partly exposed:
Inside the mainspring barrel:
And finally, the watch in parts...
Here, the parts before cleaning...
And after cleaning - everything clean and shiny again.
The crystal before getting cleaned and polished:
To oil the balance wheel I had had to remove it from the balance cock (no idea why Doxa did not include a shock protection here - I assume the watch must date back to the late 1940s / early 1950s, when this was already possible but not yet added to every movement).
The next photo shows the wheel train during reassembly:
Some time later I could regulate the watch as good as possible.
The 324 ° amplitude is good and suggests a clean / well-lubricated movement. Let´s ignore the 2.2 ms beat error =-) The only way to correct for this, would have been to remove the hairspring from the stud (probably several times to get it right...). As I didn´t have any spare parts for this movement, I decided against this risky procedure. The last picture shows the cleaned watch: