Important Modern & Vintage Timepieces...

Hong Kong, Dec 05, 2021

LOT 36

Ref. ST 186.004, quartz, electronic LCD (liquid crystal display) digital, multifunction, prototype glass dial, calibre 1621; “Speedmaster Professional Quartz” “Seamaster”; “ALASKA IV” prototype; stainless steel

HKD 51,000 - 85,000

EUR 5,800 - 9,600 / CHF 6,100 - 10,100 / USD 6,600 - 11,000

Sold: HKD 500,000

Stainless steel, quartz, vertical “tonneau”-shaped, gentleman’s wristwatch, water-resistant with snap-on case-back stamped with “Seamaster” logo, bezel with black insert; electronic LCD anthracite dial with central digital display, day indication underneath digital aperture, with multifunction, including:
· Time I - hours (12 or 24), minutes and seconds, and by a down-arrow day of week
· Time II - hours (12 or 24), minutes and date, as well as day of week by the down arrow
· 1/100 second chronograph, able to accumulate up to 23 hours 59 minutes and 59.99 seconds
· Split-second chronograph (as above)
· Lap time
· Split / stop of 2 consecutive times
· Light source for illuminating the display at night, powered by a separate battery
· Calendar programmed for leap years

Grading System
Grade: AAA


Case: 3-8


Slightly scratched

Movement: 3*


Overhaul recommended, at buyer's expense

Dial: 3-01


HANDS Original

Brand Omega, Bienne / Biel

Model “Speedmaster Professional Quartz” “Seamaster”

Reference ST 186.004

Year Circa 1978

Bracelet Black leather strap

Buckle Stainless steel Omega buckle

Caliber LCD 1621, 32 768 Hz (high precision unit manufactured by SSIH, with “BETA” light)

Dimensions 42.2 x 36.7 mm. / Ø 35.2 mm. (bezel)

Signature Case, Dial and Movement

Accessories Red service “patrimony” box, Certificate of Authenticity


The Certificate of Authenticity (No. 40 083), dated February 23, 2021, mentioned that this watch was delivered in Switzerland; with the remarks:
“It is part of a batch especially developed to be tested by astronauts and Space Shuttle pilots around 1978, codenamed “ALASKA IV” at the time.
The present watch does not bear an engraved two-digit number on the caseback, indicating a model tested within the technical office of OMEGA instead of Houston, USA delivery.
The LCD screen of the modified calibre 1621 was illuminated by two flat Tritium stripes instead of the regular bulb. The crystal of the present watch is original to its prototype state and omits the word “Light” at 3 o’clock that is found on the regular production models.”