I know Kickstarters need a catch phrase........

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fυck, that's not even true for current production, let alone vintage. Report for false advertising
 
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At @JimInOz , one of these actually needs a service...up for some fun?! 😁

I've had a 684 in the drawer for a couple of years. Every time I look at it I think "Um......no.....not today".

And the 661 is even smaller. While a millimetre or two doesn't seem significant, it's a rule of exponential proportionality (my rule).

Each step down from 30mm gets twice as complicated, so by the time you get to a 661, you're either in trouble, or "oh, I have to go and clean the latrines" sort of deviation.

I respectfully decline your offer.

😁
 
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I've had a 684 in the drawer for a couple of years. Every time I look at it I think "Um......no.....not today".

And the 661 is even smaller. While a millimetre or two doesn't seem significant, it's a rule of exponential proportionality (my rule).

Each step down from 30mm gets twice as complicated, so by the time you get to a 661, you're either in trouble, or "oh, I have to go and clean the latrines" sort of deviation.

I respectfully decline your offer.

😁
I had a friend of mine service a 19mm (case size, not movement size) Bulova for my lady- he referred to it as the “tiny time terrorist”. I don’t know how watchmakers can see anything in these things let alone work in them.
 
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I had a friend of mine service a 19mm (case size, not movement size) Bulova for my lady- he referred to it as the “tiny time terrorist”. I don’t know how watchmakers can see anything in these things let alone work in them.

For the most part I don't find them any more difficult to work on. The balance springs are more fragile, so you have to pay more attention there, but for any professional watchmaker these small movements won't be much trouble. For less experienced people, well maybe start of with larger watches and work your way up to the small ones...