Cal. 3135 and 3136

[luchiong]

Originally Posted by acce1999

To the best of my knowledge there is a 3136 for the DJ II. The difference is the diameter of the date disc, to support the larger dial with a proportionally placed date window.

James Dowling reported this from Basel 2009 on TimeZone after his meeting with Rolex.

As far as I have understood Rolex changes the designation of the calibers when there are visible or functional changes. Replacing the balance spring and shock systems with in-house production offers no change to size or function, therefore no change of caliber number. There are inconsitencies of course; like the hacking and non-hacking caliber 1570 (added function, same caliber designation).

Also, the 3132 has a larger base plate diameter, as reported by JD from Basel 2010 after his meeting with Rolex.

I hope I got this correct. I just re-read some posts on TZ.

Best,

A

Thanks Anders, you really help a lot!!
I really appreciate!