Balance Staff for 53.7 SC 6720

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As the title says I'm searching for a balance staff for a cal 53.7 SC 6720 desk clock.

Any help much appreciated!

 
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Back looking for one of these....the one I bought was mislabelled and doesn't fit 馃檨
 
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Can you measure the old staff? Maybe something else will be close enough.
 
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No these are unique to this specific calibre variation.
 
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How about have a watchmaker make the staff?