Zenith Grande Class (El Primero) Traveller Open Multicity – Watch Movement Kit

Zenith Grande Class Traveller Open Multicity (Reference 18.0520.4037/71.C491) - Watch Movement Kit

Overview

Zenith is a Swiss luxury watchmaker founded in 1865, known for its high-frequency automatic movements, particularly the El Primero caliber introduced in 1969. The El Primero 4037 is a complex chronograph movement with a 24-time-zone function, designed for world-timer complications. This movement kit corresponds to the Zenith Grande Class Traveller Open Multicity (Reference 18.0520.4037/71.C491), a model featuring a partially skeletonized dial with applied Arabic numerals and pencil hands.

This kit includes the automatic El Primero Caliber 4037 movement, a salmon/bronze guilloché dial, and matching hands. The movement is confirmed to be in good working condition by our technician and is graded Excellent in our Condition Grading Scale below. The kit does not include a stem, crown, or case components. The movement is intended for professional use and may require servicing, timing adjustments, or oiling to meet full manufacturer specifications.

The El Primero 4037 is a high-beat (36,000 vph) movement with a 50-hour power reserve, featuring a chronograph, 24-time-zone indicator, AM/PM display, and power reserve complication. The dial is partially skeletonized, revealing the movement’s intricate finishing, and includes applied steel Arabic numerals and hour indexes. The kit is suitable for watchmakers restoring or servicing a Grande Class Traveller Open Multicity or for collectors sourcing original replacement parts.

Specifications

Movement: automatic Zenith El Primero Caliber 4037. 45 jewels. 36,000 vph (5 Hz). 351 components. Estimated power reserve of 50 hours.

Functions: central hours and minutes, subsidiary seconds at 9 o’clock, chronograph with central seconds hand and 30-minute counter at 3 o’clock, 12-hour counter at 6 o’clock, 24-time-zone indication via rotating city disc, AM/PM indicator, and power reserve display at 12 o’clock.

Dial: salmon/bronze guilloché finish, partially skeletonized to expose the movement. Applied steel Arabic numerals at 12, 3, 6, and 9 o’clock. Applied steel hour indexes at remaining positions. Pencil-style hour and minute hands, with a central chronograph seconds hand. Subsidiary dials feature matching bronze-toned accents.

Condition: Excellent. The movement has been checked by our technician and confirmed to be in good working order. The dial and hands show no visible damage or significant wear. The kit does not include a stem, crown, case, or additional components beyond those listed.

Markings: movement rotor engraved with Zenith and El Primero. Dial marked with applied Zenith logo at 12 o’clock.

Notes

• The article is sold "AS IS". Please read our Warranty Policy before purchasing.
• Any parts not explicitly mentioned in this description or not visible in the accompanying photographs are not included.
• Colors may appear slightly different across various screens and devices so we cannot guarantee an exact screen-to-reality color match.

This movement kit provides the core components for restoring or servicing a Zenith Grande Class Traveller Open Multicity, featuring the brand’s signature high-beat El Primero chronograph caliber with world-timer functionality.