[skg7548]

I've used a similar product in the motor trade.
This was to halt rust and worked quite well.
The thing is with corrosion that as it eats away the steel and on super thin watch parts the damage may already be done where metal is already missing, I have seen cogs with no teeth left and that you won't overcome.
On that dial I'd try the gentler methods first though.
Good luck though, keep us posted.

 

[skg7548]

It looks like you have the same stuff as I used, it is very good at killing rust on a blistered car panels if the steel is still intact but I only ever used it for that and nothing else.