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This generic date disc is an aftermarket replacement designed for the Rolex Caliber 3135 automatic movement, corresponding to the original part number 3135-16206. It features a “roulette” or two-tone date wheel, with numerals alternating between black and red – a distinctive design found on some Rolex Datejust and Turn-O-Graph 116264 models .
The Caliber 3135, known for its robustness and precision, powers many modern Rolex Oyster Perpetual models including the Datejust, Submariner Date, and Yacht-Master .
Installing the date disc requires disassembly of the calendar mechanism. Below is a summary based on the official Rolex Caliber 3135 technical documentation :
Preparation: Remove the automatic device module and calendar mechanism components. Ensure the winding stem is refitted .
Installation: Fit the new date disc (3135-16206) by sliding it under the banking stops of the seating while disengaging the beak of the date jumper. Close the bolt to secure it .
Alignment: After installing the date disc, it is critical to check that the date changes precisely at midnight (tolerance ± 1 minute) . The hour wheel, intermediate date wheel, and date corrector must be properly aligned and secured .
Final Check: Reassemble the calendar mechanism and automatic module, then verify the correct operation of the date corrector and the changing of the date .
Q1: What is the difference between this roulette date disc and a standard one?
A: A standard date disc has all numerals in the same color (usually black), while the roulette disc alternates between black and red, offering a unique vintage aesthetic found on some Datejust models .
Q2: Does this part come with a warranty?
A: As a generic aftermarket part, warranties are provided by the seller. This product does not come with an original manufacturer’s warranty from Rolex.
Q3: Can the date disc be changed without a full movement service?
A: While it is technically possible, it is not recommended. Replacing the date disc requires significant disassembly of the movement’s dial-side components. A full service is advisable to ensure all gaskets are replaced and the movement is properly cleaned and lubricated.
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