Vintage 18K Yellow Gold Automatic Watch Case with Movement

Watch Case and Movement · Yellow Gold alloyed with copper and silver for durability and warm tone.

Purity: Likely 18K (75%) but requires testing. The deep luster is consistent with 18K or 14K solid gold or heavy gold capping.

Vintage 18K Yellow Gold Automatic Watch Case with Movement

Type

Watch Case and Movement

Purity

Likely 18K (75%) but requires testing. The deep luster is consistent with 18K or 14K solid gold or heavy gold capping.

Gold Type

Yellow Gold alloyed with copper and silver for durability and warm tone.

Weight

25-35 grams total weight (including movement). The gold case-head alone likely accounts for 10-18 grams of gold weight.

Description

A classic mid-century luxury watch chassis. The solid gold case exhibits the beefy lugs characteristic of high-end vintage horology. It houses a mechanical automatic movement featuring a central rotor for self-winding capability.

Key Features

Solid gold case construction, automatic winding rotor, and iconic downward-sloping lugs that provide a significant 'wrist presence'.

Color & Finish

Deep, warm yellow gold with a high-polish finish on lugs and bezel. Significant patina and micro-abrasions consistent with frequent wear.

Hallmarks & Stamps

Not visible in this view; typically found on the inner case back or between the lugs. Likely Swiss or French assay marks for gold purity.

Dimensions Estimate

34mm to 36mm diameter (standard vintage men's size), approximately 18mm lug width.

Gemstones & Inlays

None visible on the case; movement contains synthetic ruby jewels for friction reduction.

Clasp & Closure

Screw-down or pressure-fit case back (currently removed). Pictured without strap or buckle.

Chain & Links

N/A; the item features semi-curved lugs for a leather strap or metal bracelet attachment.

Craftsmanship Details

Machine-turned case with hand-finished lug contours. The movement features perlage or brushing on the plates, indicating mid-to-high tier manufacturing.

Authentication Indicators

The color consistency on the inner lug surfaces suggests solid gold rather than plating, which often wears through to base metal in these high-friction areas.

Origin & Maker

Likely Swiss origin. Movement design resembles Omega, Longines, or Tissot calibers from the 1950s/60s.

Era & Period

Mid-Century Modern (Late 1950s - 1960s). This period favored automatic movements with these specific lug styles.

Age Estimate

Circa 1955-1965 based on the bumper or full-rotor automatic movement architecture and lug profile.

Cultural Significance

Represents the post-war boom in luxury mechanical timepieces as symbols of professional achievement and status.

Condition Notes

Fair to Good. The movement is exposed and lacks a case back. Lugs show moderate wear and surface scratches. Movement requires servicing.

Value Estimate

Melt value of the gold (approx. $600-$900 USD) plus a horological premium if the movement is functional and the brand is identified ($1,200+ total).

Care & Maintenance

Keep movement away from moisture and dust while the case back is missing. Clean case with a dedicated gold polishing cloth; avoid ultrasonic cleaning for the movement.

Similar Items

Vintage Omega Seamaster in 18K gold, Longines Flagship Heritage gold cases, or Rolex Oyster Perpetual gold vintage models.

Interesting Facts

During the mid-20th century, gold watches were the standard gift for 25 years of corporate service, leading to a surplus of high-quality gold cases in the vintage market today.

Identified on 6/5/2026
Vintage 18K Yellow Gold Automatic Watch Case with Movement | Gold Identifier