The Rolex Datejust 1601 is one of the most recognizable vintage Datejust references, produced throughout the 1960s and 1970s. 36mm case, white gold fluted bezel and the characteristic pie-pan dial.
This example features what collectors call a “Japan Dial”.
In the 1970s, Japan implemented strict regulations restricting the use of radioactive materials such as radium and later tritium on consumer goods. As a result, certain Rolex dials delivered to the Japanese domestic market were produced without luminous material.
These non-luminous dials were made specifically for Japan. No lume plots, no tritium in the hands. Because there is no luminous compound to age, crack or discolor, these dials often remain significantly cleaner and better preserved compared to standard tritium examples.
That is where the term “Japan Dial” originates. Not from a different design, but from regulatory necessity and market-specific production.
Inside beats the Rolex calibre 1570, one of Rolex’s most respected vintage movements. Durable, precise and built to last.
A subtle but historically interesting variation within the classic 1601 reference.
