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Hi,
i buy this watch. Case is probably not original - not signet.
But movement and dial - gorgeous. Is it possible to determine the number of produced movement? It is chronometer?
Thx Petr
 

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That's a really nice PW... The movement should be indeed by IWC- the patent number engraved, with the Swiss cross and number 31457 (CH 31457) indicates a patent registered to Rauschenbach (IWC).
Espacenet - Bibliographic data
Here's the Mikrolisk result for Rauschenbach:
Mikrolisk - The horological trade mark index
Edit: the patent was granted in 1905, which means that the watch has been manufactured after that year.
 

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That's a really nice PW... The movement should be indeed by IWC- the patent number engraved, with the Swiss cross and number 31457 (CH 31457) indicates a patent registered to Rauschenbach (IWC).
Espacenet - Bibliographic data
Here's the Mikrolisk result for Rauschenbach:
Mikrolisk - The horological trade mark index
Edit: the patent was granted in 1905, which means that the watch has been manufactured after that year.
Good info for me as well with a near 16 size similar age but different movement layout. 1913 51mm original case. Both pin set and hard to find case. IWC deserves better recognition for fine watches. artb

IMG_2316a.jpg IMG_2308a.jpg IMG_2313a.jpg IMG_2315a.jpg
 
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