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Aquastar Benthos 500 Chronograph (Ref. 1002) "Minute Creeper", 1970s — view 1 of 6
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Wristwatches · Wristwatch

Aquastar Benthos 500 Chronograph (Ref. 1002) "Minute Creeper", 1970s

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Aquastar (maker)
Date
1970s
Country of origin
Unrecorded in source
Object type
Wristwatch
Stock no.
ASTB5001002
Credit line
Dealer listing, Craft & Tailored (ASTB5001002)
Catalogue title (original)
1970s Aquastar Benthos 500 Chronograph (Ref. 1002) "Minute Creeper" (English)

View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction

Record summary

Catalogued by Craft & Tailored (dealer), Los Angeles (stock number ASTB5001002), this is a wristwatch by Aquastar, dated 1970s. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Wristwatches collection. The record is illustrated with 6 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

Dealer description — Craft & Tailored

The Aquastar brand is "relatively" new to the watchmaking world as they didn't debut as a company until 1962 in Geneva and were most known for their watersport-related timepieces, such as diving watches and regatta chronographs. Included in that list is the now-famous Aquastar Benthos 500, the world's first-ever watch rated to 500 meters. Featuring a remarkable A. Schild cal. 2162 movement, the Aquastar Benthos 500 ref. 1002 is what is known to the horological community as a "minute creeper" or "slow counter". The minute creeper's chronograph hand advances by the minute, instead of by the second, resulting in a much slower revolution of the center chronograph hand. That being said, this chronograph tracks time in an extremely legible way. Indicated by a large, luminous, bright orange hand. A notable feature of the A. Schild cal. 2162 is that the minute counter chronograph is always running, and is reset to 0 by using the reset pusher located at the 4 o'clock position on the case. SPECS Stock # ASTB5001002 Brand Aquastar Style Benthos 500 Model 1002 Serial 21XXXXX Size Men's Material Stainless Steel Dial Blue Millimeters 43 Bracelet 2pc Handmade Leather Strap CASE & BRACELET The stainless steel case measures 43 millimeters and wears every bit of it exceptionally well. The case is thick, it's wide, it's pronounced. The bezel is a beautifully aged blue, faded to steel grey with a large and patinated 12 o'clock triangle. The case features a screw-down case back and is supplied with a beautiful 2pc brown leather strap. DIAL & HANDS The dial is a matte dark blue made all the more stunning by tritium hour markers aged to a pitch-perfect cream. The bright orange hand features matching tritium as well, and showcases the most fun aspect of the Aquastar. Divers could use the large broad arrow hand in conjunction with the rotating bezel to time their dives, not in seconds but in minutes as the hand slowly creeps across the dial at one-hour intervals. ACCESSORIES None. The watch is keeping time and functioning perfectly, previous service history is unknown.

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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