Model: Datejust Reference: 1601 Date: Circa 1974 Movement: 26-jewel Cal.1570 automatic, adjusted to 5 positions and temperature, No.D235490 Dial: Lapis Lazuli, magnified date aperture at 3, polished baton hands, centre seconds Case: Brushed and polished tonneau form, screw down back and crown, fluted bezel, No.3822755 Strap/Bracelet: Brushed and polished President link Buckle/Clasp: Signed folding clasp Signed: Case, dial & movement Size: 36mm 注脚 Rolex has produced an interesting range of hard stone dials throughout the decades - malachite, tiger's eye, onyx and lapis lazuli, such as the present lot, spring to mind immediately. But even though the looks of these different stones can give a completely different feel to the design of a watch, there is one thing they all have in common. Hard stone dials are always a challenge to produce but do not change over time. Carved from a large stone which needs to be of excellent quality, the slice needs to be cut exceedingly thin in order to produce a usable dial. Especially with types of stone that are on the more porous side in structure, this can be a challenge and many are rejected. The complicated production process is clearly worth the effort. The nature of the material means each dial is truly unique and characterful.