Taking a look at the 3235

[saxo3]

Originally Posted by SearChart

Yes, it is common to see gummed up dried oil at the date driving wheel, which can reduce amplitude in severe cases.
There was also a batch of movements that get extreme wear on the barrel arbor, due to a series of barrels (10s of thousands probably) that didn't get lubricated. You'll see black gunk coming out of the barrel.

Thanks

The puzzle is completed (for me).