If there’s a collector’s Rolex, it is the 40 mm Explorer II 16570, especially with a “polar” (white) dial. These have always been the less desirable GMTs from Rolex, ...

1989: Reference 16570 Courtesy. 1989 saw the Explorer II get a new reference number and only very slight updates. ... This is essentially the Rolex Explorer II we have today. Its case size now ...