April 18 2020
The "Rare Bird" Rolex Ref. 1630 was introduced a few years earlier than the Oysterquartz. A timeless and very "Gerald Genta" looking design that would later be adopted by the Rolex Oysterquartz. Between 400-1500 Ref. 630's were made in the 1970's. This is one of them. Another difference — besides the obvious difference in movement and dial imprint that doesn't say Oysterquartz — between Ref. 1630 and the Oysterquartz, is the presence of a flange with a minute track on the outer rim of the dial, and three rows of 18k solid gold links in the center of the bracelet instead of two rows. Without a doubt, the Rolex Oyster Perpetual Datejust Ref. 1630 is one of the most iconic watches of all time and a clear example of an era influenced by flat top cases and Gerald Genta, Audemars Piguet Royal Oak, inspired designs. Long live the Rolex Ref. 1630.
So few even know this watch reference exists
The calibre 1570 automatic movement is a Certified Swiss Chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests