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Vintage Seiko 7A48-7009 Sport 100 Chronograph Moonphase Date Watch circa 1980s — view 1 of 4
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Wristwatches · Wristwatch

Vintage Seiko 7A48-7009 Sport 100 Chronograph Moonphase Date Watch circa 1980s

DocumentedDocumented from an auction catalogue; attribution as stated by the auction house.
Maker / attribution
Seiko (maker)
Date
c. 1980s
Country of origin
Japan
Object type
Wristwatch
Materials / technique
gold, steel
Lot
Item 195829049
Credit line
Auction lot record: lot 344, 20 Estates Fine & Decorative Art & Watches, Richard Stedman Estate Services LLC (2025), via LiveAuctioneers
Catalogue title (original)
Vintage Seiko 7A48-7009 Sport 100 Chronograph Moonphase Date Watch Circa 1980s (English)

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Record summary

Catalogued by LiveAuctioneers auction archive (lot Item 195829049), this is a wristwatch by Seiko, made in Japan, dated c. 1980s. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Wristwatches collection. Materials and techniques recorded by the source: gold, steel. The record is illustrated with 4 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Lot description — Richard Stedman Estate Services LLC

Vintage Seiko 7A48-7009 Sport 100 Chronograph Moonphase Date Watch Circa 1980s. This two tone gold and steel 38mm mens multifunction watch features a white dial with 4 dubdials, 3 register chronograph, date display and moon phase complication. Original Z1093 bracelet with foldover clasp.Provenance:Private collection of an artist who worked in NY and London now residing in Florida, name withheld. CX MLP 344Shipping: This item qualifies for base rate unlimited jewelry, coin and specified very small item single or multiple lots combined in one padded envelope or box at shipper discretion 19.75 insured Flat Rate Shipping in the Continental U.S. by our UPS Store via the carrier of their choice and ground or air service of their choice with 2.00 per hundred including the first hundred required insurance additional and 2.00 per package additional to cover the assessment and possible use of security fees that may or may not include shipper discretion of signature, adult signature, ID, tracking and or return receipt processing whether or not one or more extra precautions are used so that the minimum per package shipping is 23.75 for lot totals up to 100.00 including buyer premium. For example exclusively jewelry and or coin lots totalling 400.00 plus 100.00 buyer premium to equal 500.00 would ship at 19.75 plus 10.00 insurance plus 2.00 fees to equal 31.75 insured. Any buyer specified carrier, speed or mode of service, shipping or delivery specific calendar day, specified packaging, specified signature, verification or notification process or outside account or label request may be alternately available and may still be very reasonable but it voids this negotiated Flat Rate program. Pickup is by appointment only with varying day, evening and weekend times each week. Items must be prepaid as there are no payment facilities at the warehouse. Couriers must have advance appointments. All items at St Petersburg 33709 unless noted in an individual item listing.

Historical context

Quartz Revolution (1969 – 1990)

Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.

Quartz and digital watches transformed the market after 1969. Swiss employment collapsed, Japanese and Hong Kong production soared, and the Swatch (1983) helped the Swiss industry recover; mechanical watches survived as luxury goods.

Read the period in the timelineMore wristwatches from this periodEarlier: Modern Mechanical Horology

Atlas type guide

Chronographs and split-seconds watches

A chronograph is a watch with an additional seconds hand that can be started, stopped and returned to zero independently of the timekeeping. Louis Moinet built an early example in 1816 and Nicolas Rieussec a recording 'chronographe' in 1821; Adolphe Nicole's heart-shaped reset cam (patented 1862) made the modern return-to-zero possible. Split-seconds (rattrapante) chronographs add a second hand that can be stopped for intermediate times; flyback chronographs restart instantly.

Chronographs were essential tools for doctors (pulsometer scales), artillery (telemeter), engineers and sport. In wristwatches, Valjoux, Venus, Lemania and later the automatic chronographs of 1969 (Zenith El Primero, the Chronomatic Calibre 11 group and Seiko 6139) are milestones.

What to look for

  • Push-pieces on the case band or a single button in the crown (monopusher).
  • Subsidiary registers for minutes and hours; tachymeter, telemeter or pulsometer scales.
  • Column wheel versus cam control visible in the movement.
  • Calibre markings of specialist makers (Valjoux, Lemania, Venus, Landeron).

Dating clues

  • Pocket chronographs with heart cam reset: after 1862.
  • Wrist chronographs: from c. 1910; two-button designs from the 1930s.
  • Automatic chronographs: from 1969.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

Read next:Flyback chronographChronograph

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