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Hi,

Found this in local market today






Has no crystal and funny minute hand... One jewel has hairlines so when You set time backwards, second hand stops. Otherwise keeps from +2 to -2mins in various positions
Enamel dial is in perfect condition

Any dating for it? 1920s?
 

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Hi there,

...and funny minute hand
Not funny, just broken off.

One jewel has hairlines so when You set time backwards, second hand stops.
Except the balance, where it depends on the position where the pivot is touching the jewel, all jewels are only touched by the pivot at one particular spot. So a crack has only any influence if it is precisely at this spot. Whether a watch stops or even runs reverse when reverse setted depends only on the friction of the cannon pinion on its post. Oppinions vary: Some even believe that the energy in the balance is sufficient to crack pallet jewels, but as long as sapphire is used to cut hard materials on a lathe, I have a hard time to believe it. For my taste, stopping and not yet running revers is the optimum amout of cannon-pinion friction.

Otherwise keeps from +2 to -2mins in various positions
Not excitingly good, but quite common for an old watch which wasn't treated carefully all its long life. This indicates bent balance pivot(s), but not so serious that it can't be corrected with timing washers.

Any dating for it? 1920s?
After the dial style mid to late 20s.

Regards, Roland Ranfft
 

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Hah...nothing that anyone but an old watchmaker would even know about, let alone use...timing washers are exactly what they sound like; little washers that you put on the balance wheel (on the timing screws) to adjust the timing. Weight, basically. But they're very very "precise" weights such that you can look at current rate of the watch and quickly calculate how many pairs of washers you need to put on the balance to bring it in line.
 
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