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Unknown wheel… ETA 900 15 Jewel movement

PRLJAMR

By PRLJAMR
in Watch Repairs Help & Advice

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PRLJAMR Member

PRLJAMR

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Any help in identifying this wheel?  I’m not sure of its purpose or how it’s held onto the movement?  I can’t find any other caliber 900 ETA’s with the same configuration.  I’m fairly new to the hobby so please forgive me if this is a ridiculous question. Appreciate any suggestions.  

53235CA5-4638-4EE5-AF48-E09C17533196.jpeg

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PRLJAMR Member

PRLJAMR

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18 hours ago, Klassiker said:

An interesting but sadly not well presented pair of articles explaining the contortions performed to display the seconds on the same axis as hours and minutes.

https://www.timezone.com/2002/09/24/the-pursuit-of-center-seconds-part-1/

https://www.timezone.com/2002/09/24/the-pursuit-of-center-seconds-part-2/

Very interesting article.  Thank you for sharing!

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