Solid watch. I'm not only a collector, but also a watchmaker. The build quality is excellent. One thing to be aware of, one of the sub-dials is the time in 24-hour format, NOT an hour counter :-). For some reason, I assumed it would calculate times up to 24-hours, so thought I had a defective watch. Clearly, it was "user error" and the watch is spot on with calibration out of the box. Really well made.