Juvenia Vintage Square Ultra-Thin Gold Plated Ref. 7635
Dress Watch · Juvenia, a historic Swiss manufacturer founded in 1860 by Jacques Didisheim. Juvenia is a high-mid tier brand known for unconventional geometry and artistic designs.
Period: Modernist / Minimalist (late 1960s to mid-1970s). The design features ultra-thin baton markers and a geometric square case characteristic of late-60s avant-garde Swiss design.

Type
Dress Watch
Brand
Juvenia, a historic Swiss manufacturer founded in 1860 by Jacques Didisheim. Juvenia is a high-mid tier brand known for unconventional geometry and artistic designs.
Movement
Manual-wind / Hand-wound caliber, likely a Juvenia 765 or ETA derivative, typically 17 to 21 jewels with a 40-hour power reserve.
Dimensions
28mm wide (excluding crown), 28mm length, approx 6mm thickness, 18mm lug width. This wears like a traditional 34-35mm round watch.
Description
An elegant example of 1970s minimalist luxury, this Juvenia square dress watch prioritizes geometry and thinness. The tone-on-tone gold aesthetic creates a seamless visual profile on the wrist, making it a sophisticated choice for formal attire. Its architectural lines are reminiscent of the Baume & Mercier 'Formula' or early Piaget designs from the same era.
Key Features
Perfectly square case geometry, ultra-slim profile, recessed linear indices, and the signature 'skinny' Juvenia stick hands often found in their 'Architect' line.
Dial Description
Sunburst gold/champagne dial with a vertical brushed effect. It features printed black linear indices and matching ultra-thin stick hands. Minimalist branding with 'JUVENIA' at 12 and 'SWISS' at 6.
Case Material
Gold-plated (likely 20 microns) over base metal or stainless steel with a high-polish finish.
Crystal Type
Acrylic/Plexiglass, flat profile, showing some light surface scratches and minor edge chips near the 11 o'clock position.
Bezel Details
Fixed integrated square bezel, part of the main case structure, polished gold-plated finish.
Crown & Pushers
Original small fluted push-pull crown, unsigned, matching the case material.
Bracelet or Strap
Aftermarket smooth brown leather strap with matching gold-tone rectangular pin buckle.
Caseback Details
Likely a solid stainless steel snap-on case back with brushed finishing and reference/serial numbers engraved on the interior or exterior.
Movement Type
Manual-wind / Hand-wound caliber, likely a Juvenia 765 or ETA derivative, typically 17 to 21 jewels with a 40-hour power reserve.
Water Resistance
Not water resistant. Rated for splash protection only when new; currently should be considered 0 ATM.
Origin & Provenance
Swiss Made; manufactured in La Chaux-de-Fonds, Switzerland. Juvenia was one of the few brands to design its own cases and modify movements in-house durante this period.
Age Estimate
Circa 1970-1975 based on the dial typography and the transition to minimalist square silhouettes.
Cultural Significance
Represents the period before the Quartz Crisis when Swiss brands experimented with 'Jeweler-style' watches to compete with rising fashion trends, favoring thinness and elegance over tool-watch utility.
Condition Notes
Good vintage condition. The plating shows wear on the lug edges. The crystal has light scuffing. The dial remains clean with no visible oxidation or moisture damage. Overall grade: Very Good (considering age).
Value Estimate
$350 - $650 USD depending on the specific caliber inside and the thickness of the remaining gold plating.
Care & Maintenance
Service every 5-7 years due to drying lubricants. Avoid all water contact as vintage square crystals have poor gaskets. Store in a dry environment to prevent plating tarnish.
Similar Watches
Cartier Tank (rectangular versus square), Omega Constellation Square, Longines Presence, or Hamilton square vintage models.
Interesting Facts
Juvenia is famous for the 'Protractor' (Architect) watch owned by Johnny Depp and the 'Mystere' series. They were pioneers in making ultra-thin movements for shaped cases.