Description: Rolex Datejust 36 ref 16013 Pre-owned Rolex Datejust 36 ref. 16013 (1979) comes from an especially important transitional era in the history of the Datejust collection. Introduced during the late 1970s, the ref. 16013 helped bridge the gap between vintage acrylic-crystal Datejust models and the more modern sapphire crystal references that would follow during the 1980s. It was eventually replaced by the ref. 16233, but many collectors still gravitate