Watch Info
Manufacturer: Zenith
Model: Chronomaster Original Triple Calendar
Condition: Excellent (Pre-Owned)
Reference: 03.3400.3610/39.C910
Year: 2026
Box: Yes
Papers: Yes
Accessories: Complete Set. Includes Zenith presentation box, 2026 warranty card, and all original documentation and accessories.
Notes: The 03.3400.3610/39.C910 is Zenith's most complication-rich expression of the Chronomaster Original — a 38mm stainless steel case housing the legendary El Primero Calibre 3610, combining a high-frequency automatic chronograph with a triple calendar displaying day, date, and month, alongside a moonphase indicator at 6 o'clock. The El Primero is one of the most historically significant movements in watchmaking — introduced in 1969 as the world's first automatic chronograph movement, its 36,000 vph (5Hz) high-frequency architecture remains the benchmark for integrated automatic chronograph performance over half a century later. The slate grey dial is the most restrained and classical configuration for this reference, allowing the rich complexity of the triple calendar and moonphase display to read with exceptional clarity against a neutral, sophisticated background. At 38mm, the Chronomaster Original Triple Calendar occupies a case size that is increasingly rare in the modern market — a dimension that wears with the elegance of a dress watch while delivering the complication depth of a serious collector's piece.
Condition Assessment
Overall Condition: Pre-Owned - Excellent. This 2026 example presents in essentially like-new condition throughout, consistent with minimal careful handling. Every surface retains the character of a virtually unworn example.
Dial, Hands, & Crystal: The slate grey dial is pristine and flawless. The triple calendar apertures — day, date, and month — are perfectly aligned. The moonphase display is in perfect condition. The applied indices and hands are in perfect condition. The sapphire crystal is mint and free of any chips or scratches.
Case & Bezel: The 38mm stainless steel case retains its full factory finishing throughout. The case flanks and lugs are sharp and essentially unmarked. The bezel is in perfect condition.
Bracelet & Clasp: The integrated stainless steel bracelet is in essentially unworn condition — tight, with no stretch and minimal surface marks. The folding clasp functions perfectly.
Technical Specifications
Reference: 03.3400.3610/39.C910
Case Size: 38mm
Case Material: Stainless Steel
Dial: Slate Grey with Triple Calendar and Moonphase Display
Movement: El Primero Calibre 3610 (Automatic, Chronograph)
Power Reserve: Approximately 60 Hours
Water Resistance: 50m
Functions: Flyback Chronograph, Triple Calendar (Day, Date, Month), Moonphase
Notable Details: El Primero high-frequency movement at 36,000 vph (5Hz), triple calendar, moonphase display, and 2026 warranty — essentially unworn.
Why the Chronomaster Original Triple Calendar is Zenith's Most Complete Complication
The El Primero is not merely a movement — it is one of the founding documents of modern automatic chronograph watchmaking. Introduced in 1969 in a race to be first that Zenith won convincingly, the El Primero's high-frequency architecture has been in continuous production ever since, refined across generations but never fundamentally compromised. The Chronomaster Original Triple Calendar is the fullest expression of what that movement can do — layering a triple calendar and moonphase display over the chronograph function to produce a watch of genuine complication depth in a case size that the modern market has largely abandoned in favor of larger, louder alternatives.
The 38mm case is itself a collector proposition — a dimension that allows the Chronomaster Original Triple Calendar to wear as an exceptionally versatile piece across contexts that a 40mm or 42mm watch cannot access. A 2026 essentially like-new complete set example represents an exceptional entry point into one of the most historically grounded and mechanically accomplished references in the current Zenith catalog. For the collector who wants El Primero heritage and genuine triple calendar complexity in the most elegant possible format, this is a compelling answer.
Why Buy From Us
We guarantee authenticity on every watch we sell, using detailed photographs to ensure when you receive your watch, there are no surprises!
Authentication Guaranteed: Every watch undergoes rigorous verification—serial number cross-check, movement analysis, and full condition report.
Transparent Condition Reporting: We document every detail—both strengths and minor imperfections—so you know exactly what you're purchasing.
Secure Shipping: Your watch ships via fully insured, tracked service (e.g., FedEx Overnight) with signature required.
Post-Sale Support: We are available for servicing and maintenance, and are also happy to make suggestions for accessories (straps, winders, storage, etc…)
Watch Info
Manufacturer: Zenith
Model: Chronomaster Original Triple Calendar
Condition: Excellent (Pre-Owned)
Reference: 03.3400.3610/39.C910
Year: 2026
Box: Yes
Papers: Yes
Accessories: Complete Set. Includes Zenith presentation box, 2026 warranty card, and all original documentation and accessories.
Notes: The 03.3400.3610/39.C910 is Zenith's most complication-rich expression of the Chronomaster Original — a 38mm stainless steel case housing the legendary El Primero Calibre 3610, combining a high-frequency automatic chronograph with a triple calendar displaying day, date, and month, alongside a moonphase indicator at 6 o'clock. The El Primero is one of the most historically significant movements in watchmaking — introduced in 1969 as the world's first automatic chronograph movement, its 36,000 vph (5Hz) high-frequency architecture remains the benchmark for integrated automatic chronograph performance over half a century later. The slate grey dial is the most restrained and classical configuration for this reference, allowing the rich complexity of the triple calendar and moonphase display to read with exceptional clarity against a neutral, sophisticated background. At 38mm, the Chronomaster Original Triple Calendar occupies a case size that is increasingly rare in the modern market — a dimension that wears with the elegance of a dress watch while delivering the complication depth of a serious collector's piece.
Condition Assessment
Overall Condition: Pre-Owned - Excellent. This 2026 example presents in essentially like-new condition throughout, consistent with minimal careful handling. Every surface retains the character of a virtually unworn example.
Dial, Hands, & Crystal: The slate grey dial is pristine and flawless. The triple calendar apertures — day, date, and month — are perfectly aligned. The moonphase display is in perfect condition. The applied indices and hands are in perfect condition. The sapphire crystal is mint and free of any chips or scratches.
Case & Bezel: The 38mm stainless steel case retains its full factory finishing throughout. The case flanks and lugs are sharp and essentially unmarked. The bezel is in perfect condition.
Bracelet & Clasp: The integrated stainless steel bracelet is in essentially unworn condition — tight, with no stretch and minimal surface marks. The folding clasp functions perfectly.
Technical Specifications
Reference: 03.3400.3610/39.C910
Case Size: 38mm
Case Material: Stainless Steel
Dial: Slate Grey with Triple Calendar and Moonphase Display
Movement: El Primero Calibre 3610 (Automatic, Chronograph)
Power Reserve: Approximately 60 Hours
Water Resistance: 50m
Functions: Flyback Chronograph, Triple Calendar (Day, Date, Month), Moonphase
Notable Details: El Primero high-frequency movement at 36,000 vph (5Hz), triple calendar, moonphase display, and 2026 warranty — essentially unworn.
Why the Chronomaster Original Triple Calendar is Zenith's Most Complete Complication
The El Primero is not merely a movement — it is one of the founding documents of modern automatic chronograph watchmaking. Introduced in 1969 in a race to be first that Zenith won convincingly, the El Primero's high-frequency architecture has been in continuous production ever since, refined across generations but never fundamentally compromised. The Chronomaster Original Triple Calendar is the fullest expression of what that movement can do — layering a triple calendar and moonphase display over the chronograph function to produce a watch of genuine complication depth in a case size that the modern market has largely abandoned in favor of larger, louder alternatives.
The 38mm case is itself a collector proposition — a dimension that allows the Chronomaster Original Triple Calendar to wear as an exceptionally versatile piece across contexts that a 40mm or 42mm watch cannot access. A 2026 essentially like-new complete set example represents an exceptional entry point into one of the most historically grounded and mechanically accomplished references in the current Zenith catalog. For the collector who wants El Primero heritage and genuine triple calendar complexity in the most elegant possible format, this is a compelling answer.
Why Buy From Us
We guarantee authenticity on every watch we sell, using detailed photographs to ensure when you receive your watch, there are no surprises!
Authentication Guaranteed: Every watch undergoes rigorous verification—serial number cross-check, movement analysis, and full condition report.
Transparent Condition Reporting: We document every detail—both strengths and minor imperfections—so you know exactly what you're purchasing.
Secure Shipping: Your watch ships via fully insured, tracked service (e.g., FedEx Overnight) with signature required.
Post-Sale Support: We are available for servicing and maintenance, and are also happy to make suggestions for accessories (straps, winders, storage, etc…)
Image 1 of 13
Image 2 of 13
Image 3 of 13
Image 4 of 13
Image 5 of 13
Image 6 of 13
Image 7 of 13
Image 8 of 13
Image 9 of 13
Image 10 of 13
Image 11 of 13
Image 12 of 13
Image 13 of 13