This is one of the most iconic watch dials there are – at least for me 😉
There has been no lack of attempts to open the case.
The rotor on this one is intact, and you can see small specs of dirt throughout the movement.
The watch a almost a minute a day fast, and the amplitude could be better. The beat error isn’t too bad.
A nice look at the auto-winder gears with the bridge removed.
As the winding stem doesn’t want to come out, I take the top plate apart in situ. Once I get to the clutch wheel and winding pinion, I manage to coax the winding stem out.
Now that the movement has come out of the case, I can take the hands and dial off.
Now I remove the balance jewels for cleaning.
Ready for the cleaning machine. Note that this Junghans also has two dial washers ….
The new mainspring is in the barrel, and I put the wheels on the plate. The third wheel has to be put into the wheel bridge for assembly.
The top plate is back together, and the balance is swinging.
And the bottom plate done.
The dial is in great shape.
I can’t get the hands back to a full shine without damaging the original lume, so I just give them a careful polish with a cloth. With a new crystal, we are back to “stunningly beautiful”.
That’s better – a good amplitude and a great beat rate. I leave the beat error, as it’s within what is acceptable, and it’s collet adjusted. Hard to get it any better…
What can you say …