In 1969, is the manufacturing Ref.1600. REF.1600 is the 3 rd model was being manufactured from 1960 until the 1980s Datejust. Medium-sized Oyster case with automatic winding machine name Cal.1570. The dial-in dial-embossed on the charged up from the edge until this generation. Smooth bezel Ref.1600 was clean and very very rare. There were with the premium at just REF.1600. Besides is a combination can't find the Oyster Bracelet 20 mm popular matte black dial with 70-year combination. Because the bracelet is common with the GMT Master in only very high value. It is an excellent individual case dial-breath year match.