Antique watch with IWC movement from 1916 - ticking sound & balance wheel - Marriage watch

The ticking sound of the IWC Schaffhausen movement (IWC 57). It was made in 1916. I repaired this movement in 2021. This is a so-called marriage watch (original movement and a combination of original and non-original parts). This is not a modern project. The watch case and dial are also old - from 1930 to 1950. The case has welded lugs. I think the dial was repainted (the sub-second at 9 indicates that).
More info about this vintage watch restoration is on my blog: 404kwatches.bl...
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