
Ref. 03.9300.3600/21.I001
The Zenith Defy Skyline Chronograph (reference 03.9300.3600/21.I001) is a 42mm stainless steel with a automatic movement and 100m of water resistance. It carries a black dial. On the secondary market it typically trades between $10,000 and $15,500.
Confirmed secondary-market sales WristWorth has tracked for this reference.
Zenith's El Primero, launched in 1969, was the world's first automatic chronograph movement — and it beat at 36,000 vibrations per hour, enabling 1/10th of a second measurement precision that competitors wouldn't match for decades. During the quartz crisis, a Zenith watchmaker famously hid the El Primero tooling behind a wall, preserving the caliber for posterity. When mechanical watches revived, Zenith had the only high-frequency automatic chronograph ready to go. Rolex licensed the El Primero for the Daytona from 1988 to 2000. Today Zenith pushes the Defy line into contemporary territory while the Chronomaster preserves the El Primero legacy. An essential brand for chronograph enthusiasts.
Chronomaster Open Heart
03.2100.400/69.C920
Chronomaster Original
03.3200.3600/21.M3200
Chronomaster Original Black
03.3200.3600/69.M3200
Chronomaster Original Triple Calendar
03.3200.3604/21.M3200

Chronomaster Sport
03.3100.3600/69.C823

Chronomaster Sport (Black)
03.3100.3600/21.C822

Chronomaster Sport (Reverse Panda)
03.3102.3600/69.M3100

Chronomaster Sport White
03.3100.3600/21.M3100
On the secondary market the Zenith Defy Skyline Chronograph (reference 03.9300.3600/21.I001) typically trades between $10,000 and $15,500, with a midpoint around $12,750. Actual prices vary with condition, box/papers, and demand.
The 03.9300.3600/21.I001 runs a automatic movement (caliber El Primero 3600).
The 03.9300.3600/21.I001 has a 42mm Stainless Steel case, water resistant to 100m, with a black dial.
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