A rare manual Zenith with roots in Universal Genève and Martel.

Before Zenith revolutionized watchmaking with the El Primero, they were already creating top-tier chronographs—and this piece proves it. Housed in a warm 18k yellow gold case, this 1960s Zenith chronograph features the Caliber 146, a manual-wind movement born from the legendary Martel manufacture—also known for supplying Universal Genève.

The silver sunburst dial, untouched and flawless, reflects the light with subtle grace. Paired with elegant sub-dials, original hands, and a sharp case from Pierre-A. Nardin, this chronograph balances refinement with function in perfect proportion.

Collectors will appreciate the column-wheel chronograph movement, a testament to the high-quality engineering that defined Zenith even before their most famous caliber.

This is not just a chronograph—it’s a reminder that timeless style and mechanical mastery aren’t exclusive to El Primero.

- wrist size in our picture is 18cm circumference -

DIAL:

• original never touched silver sunburst dial in flawless condition
• original hands & crown

STRAP & BUCKLE:

• cognac brown GOLDAMMER Kardinal leather strap fitting up to 20 cm wrist size / 2 mm thick
• gold plated GOLDAMMER buckle

CASE:

• excellent overall condition, showing minor trace of use
• 3- body 18k yellow gold case with snap-on case back from case maker Pierre-A. Nardin
• 35 mm (without crown) / 42 mm (lug-to-lug) / 18 mm (between lugs) / 12.5 mm thick
• Year: 1960s 
• total weight: 42 g 

MOVEMENT:

• Zenith Cal. 146 - manual wound
• 17 jewels, 18000 A/h, 44 hours power reserve
• professionally serviced 07/2025
• -12 sec/d / 340°

BOX & PAPERS:

• GOLDAMMER certificate of authenticity & service documentation card
• GOLDAMMER box

GOLDAMMER REFERENCE: #1102