Cool Rolex of the Day #1149: 1630 Datejust with integrated bracelet, the only known example with a white gold bezel and all-steel bracelet, 36mm. Circa 1978 : r/rolex
Rolex Datejust 1630 *RARE* - DelrayWatch.com
Rolex Datejust ref 1630 SS & 18K YG Automatic (Oyster Quartz Case) circa 1977
Rolex Datejust 36 1630 - the rare bird | Watch Rapport
Rolex | Datejust, Reference 1630, A yellow gold and stainless steel bracelet watch with date, Circa 1975 | 勞力士| Datejust 型號1630 黃金及精鋼鏈帶腕錶,備日期顯示,約1975年製| Fine Watches