1975 Zenith Vintage El Primero Pilot/Diver

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The iconic and rare Zenith Pilot/Diver chronograph with the legendary El Primero 3019 PHC high-beat movement. This timepiece was produced from 1972 to 1975 and production numbers are still debated; some sources talk about 2,500 pieces, while others state numbers as low as 800 pieces in different variations. The variations in question had mainly to do with different bezels: a diver’s bezel with a 1-55 graduation and an aviator’s bezel with numerals 1 through 12.

Oversized among oversized vintage chronographs - 44 mm without crown and 14 mm of thickness, yet comfortable on the wrist thanks to balanced tonneau shape of the case. All original parts, strong case and immaculate dial make this piece a desirable addition to any collection.

Manufacturer: Zenith, Switzerland
Model: El Primero Pilot/Diver Chronograph
Reference: 01.0190.415 (800 pieces made)
Type: Automatic chronograph with date complication
Year of production: ca.1975
Case type: 3-body, with screw-back, satin finishing.
Case material: Stainless steel. Original rotating bakelite bezel (rounded triangle at 12 o'clock) showing certain wear and aging.
Case measurement: 44 mm (without crown) / 52 mm (lug-to-lug) / 22 mm (between lugs)
Case serial number: n/a
Case back: Screw-back, signed ‘Zenith Swiss’ and with Zenith logo on the inner side. Signed with patent number 'Brevet + 487449' and year of production.
Crown/pushers: Steel screw-down fluted crown signed with Zenith logo and steel round pushers.
Crystal: Mineral
Movement type: Precise high-beat 3-reg automatic chronograph, 60 seconds, 30 minutes, 12 hours, pillar wheel subsidiary second with quick-set date
Movement model: Famous Caliber 3019 signed ‘Zenith’ and ‘Swiss Made’, 31 jewels, 36000 A/h, 50 hours of power reserve, incabloc. Quick-set date.
Movement serial number: n/a
Dial: Matte black dial rounded by black inner bezel (rehaut) with white printed tachymeter scale. The dial is decorated with black printed minute/seconds track on the outer perimeter and with luminous ‘baton’ hour markers. Oversized minutes counter subsidiary dial at 3 o’clock, 12-hours counter subsidiary dial at 6 o’clock and oversized small seconds subsidiary dial at 9 o’clock. Signed ‘Zenith Chronograph Automatic El Primero’. Signed 'T Swiss Made T' at 6 o'clock.
Hands: White luminous hours and minutes hands, blue chrono sweep seconds hand with luminous block. White counters' hands.
Case condition: 2 (fine), showing minor traces of use, some scratches on the caseback. Engravings on the outer part of the caseback are worn down.
Movement condition: 1 (mint) to 2 (fine) only original parts, adjusted and keeps good time. All functions work perfectly.
Dial/hands condition: Untouched and immaculate. All original dial and hands.
Overall condition: 1 (mint) to 2 (fine)
Delivery set: The watch come with genuine leather strap and original Zenith buckle, with company’s warranty certificate, company’s box and general terms and conditions.
Warranty: 1-year technical warranty

Collections: Archive

Category: Zenith

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Sizing Product

Measuring a watch

It is always crucial to understand the size of the watch, especially when it comes to vintage watches which are generally considered as too small in comparison with what watch industry offers today. For example, the original Patek Philippe Calatrava introduced in the 1930s was only 31 mm in diameter, while today's classic Calatrava is 39 mm. When you think about 8 mm, it doesn't seem to be a big difference, but believe it is.

In our condition reports we normally disclose three most important parameters as follows: diameter without crown / lug-to-lug length / lug width. 

Diameter without crown

It is, so far, the most important measurement to understand the size of a regular round-shaped watch.It helps you to understand proportions and overall look of the watch. It is important to consider width of the bezel and color of the dial, because certain combinations may make the watch look bigger, while some other smaller. It is all very individual, however there is common understanding:

Lug-to-lug width

This parameter will help you to understand whether the watch is comfortable for wearing. You should compare lug-to-lug width with the width of your wrist, and if lug-to-lug width is smaller or equal, then this watch shall be comfortable.

Lug width

This measurement is defining what size of strap you need for the particular watch. Depending on era and manufacturer you can find watches with lug width between 14 mm and 24 mm. Most common sizes are 18 mm and 20 mm.