Hong Kong, Nov 25, 2022

LOT 62

OMEGA
REF. ST 388.080, ELECTRONIC, CHRONOGRAPH, MINUTE AND HOUR COUNTERS, DATE, DAY, SILVER “ALASKA” PROTOTYPE DIAL; “SPEEDSONIC” “SEAMASTER”; STAINLESS STEEL

HKD 23,900 - 47,700

EUR 3,100 - 6,100 / CHF 3,000 - 6,000 / USD 3,100 - 6,100

Stainless steel, electronic, “tonneau”-shaped, large gentleman’s chronometer wristwatch, two-piece case, water-resistant with screwed case-back, silver colour dial, so-called “Alaska”, with applied radial indexes, black auxiliary recorders, subsidiary seconds at 12, and five horological complications:
· Chronograph (activated by the two round-shaped push-pieces located on the case-band) with tachometric scale graduated on the dial for 500 units per hour
· 60-minute counter (subsidiary dial at 9 o’clock)
· 12-hour counter (subsidiary dial at 6 o’clock)
· Half-instantaneous date of the month (aperture at 3 o’clock)
· Day of the week (aperture at 3 o’clock; indications given in English)


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-01

Good

HANDS Original

Brand Omega, Bienne / Biel

Model “Speedsonic” “Seamaster”; “Alaska” prototype dial

Reference ST 388.080 (188.001 / 388.080)

Year circa 1975

Movement No. 38 417 179

Case No. unnumbered

Material stainless steel

Bracelet stainless steel Omega bracelet with deployant clasp (Ref. 1170; end-links 637)

Length 180 mm. (approx.)

Caliber 1255, electronic, unadjusted, diapason tuning fork for swinging element, frequency of 300 Hz (under Bulova licence and ESA patents, Ref. 9210), 12 jewels

Dimensions 44.2 x 43 mm.

Thickness 14.9 mm.

Weight 135.5 gr. (approx.)

Signature dial, case and movement

Accessories Extract from the Archives; copy of the invention patent

Notes

The Extract from the Archives (No. 27 397), dated June 29, 2022, mentioned that this watch was delivered on October 29, 1975, in Switzerland.

Please note that the silver colour “Alaska” prototype dial is not mentioned on this Extract from the Archives.

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Case based on the Swiss invention patent No. 508 925 (published as the design patent No. 14 540 / 68), delivered on September 27, 1968, to Ervin Piquerez, Bassecourt (Jura), for a “Montre bracelet comportant un écran protecteur”.