Description: Rolex Day-Date 36 Ref 118238 Pre-owned Rolex Day-Date 36 ref 118238 (2000) replaced the outgoing 5-digit ref. 18238 in 2000 and remained in production for just under a decade. Compared to its predecessor, not much changed mechanically. It still uses the caliber 3155 with a Double Quickset and self-winding. However, Rolex did take the opportunity to make many of the same upgrades to its case and bracelet as it did across its other dress watch collections.