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Discussion Starter · #1 ·
Hi,
need help with identifying this A.Michael (AM) 17 jewels movement from Avalon pocket watch.Looking for specific caliber number so I can get new balance stuff .
Thank's
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News flash: The caliber designation can usually be derived from the staff dimensions. Let an actual watchmaker do this for you.
 

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Discussion Starter · #8 ·
can you share it for future readers?
In this specific case it is AM Caliber 520...529 movement.I was interested to find right designation so I can order new balance staff.
If you look table sheet in link that is kindly provided by Roland you can see that AM movements from 480 to 546 all have same or similar style bridges but ligne size and height of movement are not same, also jewels count is from 15 to 17. So You will have to measure movement to determine caliber number.

Hope it helps.
Regards
 
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