YEMA DAYTONA RALLYGRAF CHRONO, VALJOUX 7730

3250,00 

Brand

Crown‎ ‎

Model

Rallygraf

Gender

Man‎

Country of origin

France‎ ‎

Decade

1960s‎ ‎

Case code

319590

Movement

Manual winding

Caliber

VALJOUX 7730

Crystal

Original PLexiglás‎ ‎

Dial

Panda, black with two white subdials‎ ‎

Bezel

Bi-directional swivel.‎ ‎

Corona

Steel, at 3.‎ ‎

Case material

Stainless steel‎ ‎

Diameter without crown

38 mm

Diameter with crown

41.6 mm‎ ‎

Lug-to-lug length

49 mm

Thickness

13 mm

Strap width

19 mm

Strap material

Three Racing genuine leather handmade straps‎ ‎

Strap color

Black‎, Brownish Orange‎ ‎, Chocolate brown‎ ‎

Closure/buckle

Stainless Steel, Clasp Type.‎ ‎

Condition of the watch

Very good, with slight signs of aging.‎

Case/Box

Yes, generic.‎ ‎

Documentation

Free Certificate of Authenticity available on request‎

Yema Vintage “Panda” Dial Chronograph: French Legend of the 60s

Origins and Historical Context
The Yema chronograph with “Panda” dial was born in 1966 under the name Rallygraf, created by the French brand Yema —founded in 1948 by Henry Louis Belmont in Besançon, the watchmaking capital of France—. This model emerged during the peak of European car races, designed to accurately time laps and speeds. Its launch met the demand for professional tools by drivers, engineers, and motorsport enthusiasts, establishing Yema as a pioneer in French utilitarian watchmaking.

Technical Innovation: The Swiss Heart
The original Rallygraf was equipped with high-end mechanical movements:

  • Valjoux 7730 Caliber: Manual winding version with a column wheel, ensuring smooth operation of the chronograph and precision in sports measurements.

  • Valjoux 7733 Caliber: Later evolution with a quick date change function, maintaining robustness against extreme vibrations.
    These Swiss calibers, known for their reliability, operated at 18,000 vibrations per hour and offered a power reserve of 48 hours. Their construction prioritized impact resistance, using thick plexiglass crystals and cases sealed against dust and moisture.

Iconic Design: The “Panda” Dial
The nickname “Panda” stemmed from its high-contrast aesthetic:

  • White or silver dial with black subdials at asymmetrical positions (3H and 9H), reminiscent of the dashboards of racing cars like the Porsche 911 or the Alpine A110.

  • Aluminum tachymeter bezel: To calculate average speeds, with a scale of 60 units and a matte anti-reflective finish.

  • “Lollipop” hands: Designed for instant readability, coated with tritium (luminous material of the era).

  • 38-40 mm case: With curved lines and short “ears,” made of stainless steel for intensive daily use.
    This combination of functionality and style made it a symbol of the sporty elegance of the 60s.

Sporting Legacy: From Mario Andretti to Formula 1
The model gained global fame when driver Mario Andretti used it during his victory at the 1969 Indianapolis 500. Andretti, a legend in motorsport, personally chose the Rallygraf for its reliability, purchasing it with his own funds instead of accepting sponsorships. This episode reinforced its reputation as a tool for professionals, linking it to historic moments in motorsport. Additionally, it equipped French teams in rallies like the Tour de Corse and the Mont Blanc Rally, where its shock resistance and ability to withstand extreme temperatures were tested in mountainous terrain.

Evolution and Variants
Between 1966 and 1975, Yema released multiple versions:

  • “Reverse Panda” Reference: Black dial with white subdials, less common and now more coveted.

  • “Tropical” Edition: Dial faded by UV light effects, creating unique brown tones.

  • Gold-plated models: Targeted at luxury markets, with gold pushers and crocodile leather straps.
    All shared the vintage Yema logo (sans-serif typography) and caseback with the brand’s emblem.

Collectibility and Contemporary Editions
Today, original pieces are valued as museum pieces due to:

  • Authenticity: Unrepainted dials, natural patina on tritium markers, and intact Valjoux movement.

  • Rarity: Less than 30% of produced units survive in original condition, due to wear from professional use.

  • Historical Connection: Those associated with Andretti or racing teams achieve notable values at auctions.

In 2021, Yema revived the spirit of the “Panda” with the Rallygraf Meca-Quartz:

  • Seiko VK64 Movement: Hybrid (quartz for time, mechanical for chronograph), with a smooth sweeping second hand.

  • Inherited bezel and dial: Retains the tachymetric design and “Panda” scheme, but enlarges the case to 40 mm and uses Super-LumiNova for luminescence.

  • Affordable price: Starting at €369, democratizing the vintage legacy.

Conclusion: An Emblem of Emotional Engineering
The Yema Rallygraf “Panda” embodies the essence of tool-watch chronographs: instruments created for real challenges, not as decorative accessories. Its history merges Swiss precision, French design, and motorsport legends, reminding us that great watches not only measure time… they also accelerate dreams. Half a century later, its revival demonstrates that good design is eternal when born out of authenticity.

TEMPPUS. All rights reserved.

Additional information

Fully serviced watch. Guaranteed for daily use.

3250,00 

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