Seiko debuted its 6106-8100 dive watch – like this just serviced black-dialed variant from 1969 – in 1967 as its first “Sport Diver.”  The Seiko 6106 is classic vintage Seiko for several good reasons, with the dial well-spaced, rendering the bezeled day/date window as hardly obtrusive. 


Onto one of the best features of the 6106 – the dial.  These dials, regardless of variant color, sparkle in the light and were finished better than many of the Swiss watches from the same period.  This is coupled with little writing on the dial, rendering a dial that’s purposeful and sparse, finished with Seiko’s famous Suwa logo.  Once you add the case-colored bi-directional bezel, which flows well into the radial polished case, you have a nicely elegant and simplistic dive watch.


As noted by Worn&Wound, Seiko’s marketing ads boasted about the 6106’s diving capability, that was “Proof," all the way down to 229 feet!  Other ads made it seem like the choice for surfers.  Either way, it was a popular offering and the affordable, but not cheap at the time, price of $75.

This Seiko Sport Diver automatic comes with two nylon NATO straps, spring bar tool, and Pelican travel case.

1969 Seiko 6106-8100 Proof/Proof Automatic Sport Diver

  • DIAL: Original Seiko-signed dark gray “proof” dial.  Day/date at 3 o’clock position works nicely.  Lume is in quite nice shape considering the watch is a half century old.


    CASE: Original 38mm x 45mm stainless steel case in pre-loved condition.  Matching original “proof” caseback.


    CRYSTAL: Original acrylic crystal, scratch-free.


    BAND: Two 19mm nylon NATO strap - one gray, the other dark blue and gray - with stainless-steel hardware.


    MOVEMENT: Original Seiko 25-jewel 6106B automatic movement, manufactured in June 1969.  This watch received a full service in September 2019.


    CROWN: Original recessed unsigned stainless-steel crown.

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