Seiko Automatic Ref. 2706-0250 – Vintage Green Dial – 21 Jewels – Day-Date – 1970s

This vintage Seiko Automatic ref. 2706-0250 is a wonderfully characterful ladies’ mechanical watch, combining a vivid emerald-green dial with a compact stainless-steel case, full day-date display and an unusually sophisticated high-frequency automatic movement.

The reference is 2706-0250, a documented vintage Seiko configuration found with this distinctive green dial and day-date display. Surviving examples confirm the reference as a compact ladies’ automatic, generally measuring approximately 26–28mm depending on measurement method, and powered by Seiko's 21-jewel 2706 movement.

Its strongest feature is unquestionably the dial. Depending on the light, the metallic green finish shifts from dark forest tones to a much brighter emerald, giving this otherwise restrained vintage Seiko considerable personality.

Watch Details

• Brand: Seiko

• Model: Automatic Day-Date

• Reference: 2706-0250

• Era: Vintage, circa 1970s

• Country: Japan

• Case: Stainless steel

• Case Size: Approximately 26–28mm class

• Dial: Metallic / sunburst green

• Hour Markers: Applied silver-tone baton indexes

• Hands: Silver-tone baton hands

• Seconds: Central sweep seconds

• Day: Aperture at 3 o’clock

• Date: Aperture at 3 o’clock

• Movement: Seiko Calibre 2706A family

• Movement Type: Mechanical automatic

• Jewels: 21

• Frequency: 28,800 vph / 4Hz

• Hand Winding: Supported by the 2706A movement

• Caseback: Stainless steel screw back

• Caseback Markings: SEIKO, STAINLESS STEEL, 2706-0250, WATER RESIST, JAPAN

• Crystal: Vintage crystal; exact material not represented without physical inspection

• Bracelet: Stainless-steel articulated bracelet as fitted

• Water Resistance: Originally marked WATER RESIST; no current water resistance is guaranteed

• Included: Watch and bracelet as photographed

Multiple surviving examples of the exact 2706-0250 confirm the automatic movement, 21-jewel specification, stainless-steel construction, day-date complication and green-dial configuration.

Condition

This example presents with plenty of genuine vintage character and shows signs of use consistent with its age.

The green dial remains particularly attractive, developing dramatically different shades depending on the lighting. The applied baton indexes and silver-tone handset contrast nicely against the green surface, while the large framed day-date aperture at 3 o’clock gives the watch a purposeful appearance.

The crystal displays visible haze, scratches and age-related surface wear in the supplied photographs. These marks affect the clarity of the dial from certain angles and should be taken into consideration when assessing the watch.

The stainless-steel case shows scratches, scuffs and general surface wear consistent with decades of use. Importantly, the angular shape of the case remains evident and gives the watch its characteristic 1970s profile.

The caseback also displays considerable surface marking, but the important 2706-0250 reference is clearly visible, removing the ambiguity from the previous identification.

The stainless-steel bracelet shows age-related wear and surface marking throughout. It complements the case well and gives the watch the integrated, compact appearance typical of the period.

No box, papers or service documentation are shown and therefore none are represented as included. Mechanical accuracy, power reserve and service history should only be stated if separately tested.

Please study all photographs carefully, as they form an important part of the condition description.

The Seiko 2706A – A Serious Little Movement

The movement is one of the reasons this watch is considerably more interesting than its modest dimensions might suggest.

Seiko's 2706A was designed as a sophisticated compact automatic movement for ladies’ watches. It combines automatic winding with hand-winding capability, central seconds and a full day-date calendar.

More unusually, the calibre operates at 28,800 vibrations per hour, or 4Hz.

That high-beat specification is particularly appealing from a collector's perspective because it demonstrates that Seiko was applying serious mechanical engineering even to its smallest automatic watches rather than treating ladies’ models simply as jewellery.

Surviving examples of the exact 2706-0250 are consistently documented as 21-jewel automatic watches, confirming the specification for this reference family.

The Green-Dial 2706-0250

The green dial is arguably what separates this reference from a conventional vintage ladies’ Seiko.

Multiple surviving 2706-0250 examples are specifically documented with green or emerald-green dials, confirming that this is an established configuration of the reference rather than an identification based solely on the photographs.

Its colour changes dramatically with illumination. In softer light it appears almost charcoal-green, while direct light reveals a much brighter emerald centre.

Combined with the silver applied indexes, steel case and period bracelet, it gives the watch a distinctly 1970s Japanese aesthetic.

Why Collectors Love the Seiko 2706-0250

The appeal of the 2706-0250 lies in the combination of mechanical specification and period design.

It offers a 21-jewel automatic high-beat movement, day-date complication, green dial, stainless-steel construction and compact vintage proportions in a watch that remains unmistakably Seiko.

The 2706 family also represents an interesting part of Seiko's mechanical history. These were small watches, but the manufacture still engineered them with features normally associated with considerably larger automatic movements.

For this example, the combination of the emerald-green dial and clearly identifiable 2706-0250 reference makes it an especially appealing survivor.