Bernhard J
·This weekend I just for fun (after having tested the Speedmaster 125 and a vintage Zenith, which I had serviced these days) put the Benson shown in the opening post on the timer, not expecting particular good results. But now look at this. It was quite the same in the other positions with a maximum difference in the positions of 5 seconds (all at room temperature). That is a real quality movement, not only optically. I do not intend to correct the small beat error.
And here is a nice detail of how the winding crown is attached.
And here is a nice detail of how the winding crown is attached.
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