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Balance staff identity


Colditz

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Hi Everyone. I hope someone
can help me identify the balance staff I need for this movement. Its a 40mm OD. It is has PROT stamped on the main plate. It has Crown on a plinth and Lion logo with A1 stamped in the crown plinth. The number on the main plate is 1090692.

Many thanks for any consideration.

IMG_Prot_1.thumb.jpg.ae9c07cf32b28eabd3fc07af369b000b.jpgIMG_Prot_2.thumb.jpg.7555836bb5daee0f6c333f31ff97ee91.jpg

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https://r.search.yahoo.com/_ylt=AwrIQhJVOvlhyQkACAR3Bwx.;_ylu=Y29sbwMEcG9zAzkEdnRpZAMEc2VjA3Ny/RV=2/RE=1643752150/RO=10/RU=http%3a%2f%2ftheindex.nawcc.org%2fIdentification.php/RK=2/RS=xhih7XEdWLSOCWCRagmMmIAgHQ4-     have a search on here for the lion trademark there is a reference to    Duvedry and Bloquel    1870 to 19xx   The logo is a right facing lion stood on a line.  

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