Important Modern & Vintage Timepieces
Monaco, Jul 21, 2021
LOT 224
Zenith
Self-winding, chronograph, minute and hour counters, date; “El Primero”; stainless steel
Self-winding, chronograph, minute and hour counters, date; “El Primero”; stainless steel
EUR 1,800 - 3,600
USD 2,200 - 4,300 / HKD 16,600 - 33,200
Stainless steel, self-winding, tonneau-shaped, gentleman’s wristwatch, water-resistant, with snap-on case-back, silver colour dial with subsidiary seconds at 9 and four horological complications:
• 1/10 second chronograph (activated by the two round-shaped push-pieces)
• 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)
| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 3-8 |
Good Slightly scratched |
Movement: 3* |
Good Overhaul recommended, at buyer's expense |
Dial: 3-01 |
Good HANDS Original |
Brand Zenith, Le Locle
Model “Chronograph Automatic, El Primero”
Year circa 1975
Movement No. unnumbered
Case No. 054 E 949
Bracelet black leather Zenith strap; stainless steel Zenith buckle
Caliber 3019 PHC
Dimensions 41.1 x 38.4s 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.