Seiko 7017-6020 Proof/Resist Speed-Timer from Feb 1971

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Available is this very clean 7017-6020 Seiko 5 Sports Speed-Timer from February 1971. All original and made only for the Japanese Domestic Market. Already rare, this watch is made even more so by being a transition piece with Proof Dial/Resist back with original bracelet and clasp. 

Link to Instagram post here

All original including it's hardlex crystal. These watches have incredible presence and at 43mm were a big watch when they were first produced in 1970 as Seiko's answer to the growing popularity of rally timer watches. At a mere 5.9mm the 7017 movement laid claim at the time of being the world's thinnest chronograph movement which is why a minute sub-dial was omitted. 

Manufactured by the Daini factory in February 1971 and just serviced (October 2020) so movement is freshly lubricated, clean and free of any deterioration. Keeping amazing vintage time. Automatic chronograph with internal rotating bezel with tachymetre scale, operated via the crown. Chrono functions all working as they should, buttons click nice and firmly and it resets perfectly to zero. Day/Date functions working correctly by pushing in the crown lightly for day of the week and turning crown in position 2 for date. Cosmetically in excellent condition.

Movement: Original, SEIKO Daini 7017A - Great condition, screw heads are in good condition. Fully serviced October 2020, test worn for 24 hours & keeping chronometer grade time during inspection. Please see photo of watch on timegraher for readings,  accuracy shown cannot be guaranteed but +/- 10 s/d is our benchmark for serviced watches. Day/date turn over at midnight & quickset works as it should. Not guaranteed water resistant.

Serviced with fresh pusher and crown gaskets but not guaranteed waterproof

Dial: Black, in excellent condition

Day/Date at 3 o'clock Day in English and Kanji, features the classic Sunday in red

Glass: Original Hardlex, very good 

Hands: Original. Hour hand has some minor marking, minute hand very good. Some light discoloration to the (original) lume on hands and hour markers 

Case: Original, unpolished stainless steel, minor age related wear but no dings, case-back is excellent with serial number and reference very well defined

Jewels: 21

Beat Rate: 21,600bph

Diameter: Approx. 43mm

Lug width: 19mm

Band: Original stainless steel bracelet with original clasp, will fit up to a 18.5 cm wrist.

Crown: Original, well fitted

Year and location of manufacture - Feb 1971 - Serial No.121378 - Japan SEIKO Daini Factory