Nice 1680 Submariner date in very good used condition. Case has signes of use, has been surely buffed in the past but lugs are still thick preserving the original shape. Original case back correctly engraved 1680. Reference and serial numbers between lugs are sharps and perfectly readable (serial 5.216.xxx). Lovely naturally faded to blu/gray bezel insert. Later service crown. 
Dial has a lovely eggshell tritium patina, has light fades and spots doe the age, the small crown logo has some bubbles and fading on the white ink (defect) that does not really affect the beauty of the whole piece. 
Original and matching hand set with closer patina tone, they has some light pitting. 
Brand new service plexi crystal. Original bracelet ref. 93150 with 580 end links and diver extension, correct clasp code B. Clasp crown logo has some fading. 
Movement 1570 is not recently serviced but has been checked and adjusted and has good time keeping and amplitude.