I picked this little fellow up in a shop I visit regularly in Ohio, USA. The shop owner, a watchmaker told me it came from an old family in town....but who knows. My knowledge of early IWC wrist watch is limited. The movement serial number 755764 seems to date it to the mid 1920s. It has the look of a Cal. 83 but those don't seem to have been produced until the '30s.
Anyway, here are a couple of pictures. What do you think?
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