Keep in mind that this watch was produced in the 40s. Because this is a non radium version, its state of conservation is just astonishing. We are talking about the rare Juvenia Arithmo. A 36mm stainless steel watch with an integrated sliding calculation rule. This one has a flawless « California » dial with golden hands. And It is obvious that the watch has been very well preserved from dust and moisture. The unique « refrascope » crystal is of course original and is also in perfect condition. This is probably one of the cleanest Arithmo out there. And did you know that the inventor’s name of the rotation slide rule was G.F. Wittgenstein?

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