Only Online Auction
Hong Kong, Mar 03, 2021
LOT 319
Zenith
Self-winding, chronograph, minute and hour counters, triple date à guichets (with apertures), moon phases; “El Primero”; 18K yellow gold
HKD 30,200 - 43,100
CHF 3,500 - 5,000 / EUR 3,300 - 4,700 / USD 3,900 - 5,600
18K yellow gold, self-winding, tonneau-shaped, gentleman’s wristwatch, water-resistant with case-back screwed by four screws, silver colour dial with subsidiary seconds at 9 and seven horological complications:
· 1/10 second chronograph (activated by the two round-shaped push-pieces) with tachometer scale graduated on the dial for 500 units per hour
· Half-instantaneous 30-minute counter (subsidiary dial at 3 o’clock)
· 12-hour counter (subsidiary dial at 6 o’clock)
· Instantaneous date of the month (aperture between 4 and 5 o’clock)
· Day of the week (aperture at 10 o’clock; indications given in German)
· Month of the year (aperture at 2 o’clock; indications given in German)
· Phases of the moon (aperture at 6 o’clock)
| Grading System | |
|---|---|
Grade: A |
Good |
Case: 3-8 |
Good Slightly scratched |
Movement: 3 * |
|
Dial: 3-01 |
Good HANDS Original |
Brand Zenith, Le Locle
Model “Chronograph Automatic”, “El Primero”
Reference 0150.412
Year circa 1990
Movement No. unnumbered
Case No. unnumbered (by Eric Monnier, La Chaux-de-Fonds)
Material 18K yellow gold
Bracelet green leather strap
Buckle gilded brass buckle
Caliber 418
Height 43.9 mm.
Width 41 mm.
Signature dial, case and movement
Notes
Zenith, “El Primero”
The “El Primero” self-winding chronograph was launched in 1969. It was the world’s first and the only one in its category to measure short periods of time to one-tenth of a second. The lever escapement movement beating 36,000 vibrations / hour (high mechanical frequency) and is fitted with a central rotor mounted on ball bearings. The coordination of chronographic functions is operated by column wheel. 50-hour power-reserve.
At this time, two versions of the calibre exist:
· Z 400, instantaneous change of date with quick setting; 31 jewels, diameter 30 mm., height 6.5 mm., 280 components.
· Z 410, instantaneous change of date and day with quick setting, month and moon phases; 31 jewels, diameter 30 mm., height 7.55 mm., 354 components.