I did that, with manual version of your same movement. There is a difference. Over about a month of measurements, after a “full wound I’d” have approx between 2 and 4 seconds of delay per day. After no wound between 0 and 2. I didn’t run the statistical tests but as a trend it’s clear. And surprising: as the main spring loses energy, my watch becomes slightly more precise. Unless I am doing a bad job at eyeballing the data, I am on mobile and can’t really do anything more sophisticated than that.
however that’s just my watch. Could be reversed if for example mine was gaining seconds rather then losing them (just shift the distribution above 2 seconds to the right and I have exactly the opposite effect). However the point is that there is an effect, which supports the argument that PR does matter even if the additional hours do not end up being “on the wrist”.
Data below. All winding and measurement happened in the evening, approx 24 hours since the last update. Below “winded” (sic.) yes indicates that after that measurement, the watch was fully wounded. So effects should be evaluated shifted by one day (ie wounding today has an effect on tomorrow’s reading).
The watches I add to my collection are all linked to events in life that the watch represents, can’t see myself selling any while not discrediting or diminishing the memory it’s attached to. Will be hard. Haven’t with any yet.
I am super happy with the Erika’s original. not cheap but the customization is great and the materials/service fantastic. The one you see on the khaki is 120€ all in all, but I don’t regret any of those euros going into the bracelet 😉 worth it. The bronze hardware is the perfect touch. Only regret is that I bought only one bracelet, I would’ve liked also a more “summer-y” version. The Havana brown is awesome in person but sometimes you want something more cheerful on.
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