The datejust II had the 3136 in it, which is based on the 3135.

Jan 20, 2021,14:15 PM
 

All or most lady datejusts in the early 2010s had the 3135.

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Was Rolex caliber 3135

 
 By: Thomas_3 : January 20th, 2021-13:56
used in both the Submariner date and the Datejust? I have a friend who wears a Sub and doesn't believe me. I have both and am pretty sure I once read somewhere that they once shared a movement, may they still do. Before put any money on the table I want t... 

The datejust II had the 3136 in it, which is based on the 3135.

 
 By: Reuven Malter : January 20th, 2021-14:15
All or most lady datejusts in the early 2010s had the 3135.

I quote from BeckerTime:

 
 By: cazalea : January 20th, 2021-14:16
The Rolex Caliber 3135 Rolex used the caliber in just about every one of the company’s three-hand timepieces at some point and in some form since its inception. The list of watches that utilize Rolex’s 31-jewel workhorse caliber reads like a who’s-who of ...