this is a rare and early doublesigned Zenith/Movado Datron chronograph from 1969 in all original condition. Those Datron High Frequency Chronographs have been launched shortly after zenith released their first El Primero models, like A 386, A 384 and A385 and in the same year in 1969. Only the very first Datron HS 360 are also Zenith signed. That was related to the new groundbreaking invention by Zenith, the El primero 3019 PHC, which was the first automatic chronograph caliber of the world. Our SubSea HS 360 is in beautiful original condition with a flawless dial and matching lightcreme-toned tritium on dial and in the handset. The 37,5cm steelcase case is absolutely unpolished and it even comes with it´s original bracelet. The Zenith El Primero 3019PHC was just serviced by our watchmaker and he took care that all original parts are still kept, regarding the importance of this movement (further details upon request).