Description
For sale is a stunning, pristine, fully serviced example of an original condition Omega de Ville Automatic wristwatch on its original solid gold integrated but adjustable Omega Milanese bracelet. Both watch and bracelet are hallmark for solid 9ct gold
The Bracelet’s Condition: The 9ct solid gold Milanese mesh bracelet is in perfect condition with no kinks, tears, or rough edges.
Bracelet Length: the bracelet comfortably fits a standard 7.5-inch wrist with the usual three bar adjustable Omega signed and hallmarked clasp.
By 1968, Onega had split the De Ville Dress line completely from its Seamaster line. Omega De Ville’s of this period no longer carried the “Seamaster” name on the dial not the Seahorse “Hippocampus” on the caseback. The cases were made under the official license for Omega in England with the casebacks left deliberately black often for use as presentation or monogrammed watches from high-end Stores such as Garrard’s of London.
Key Exterior Features of the Omega Ref. 366.5445:
1. Solid 9ct Gold Finish: The outer face features a uniform, press-fit 9ct solid gold cap with a faint circular-brushed or mirror-polished finish.
2. Zero Outer Markings: There are no logos, no Hippocampus medallion, no reference numbers, and no gold purity stamps anywhere on the outside.
3. Beveled Edge: Designed with a subtle, angled step along the perimeter that seats flush into the mid-case.
4. Purposeful Blank Canvas: UK case manufacturers (such as Dennison or Shackman) produced these 9ct cases specifically for the British market with completely bare casebacks so jewelers could add custom presentation or anniversary engravings upon purchase.
Your watch is a 100% authentic, original 9ct solid gold Omega De Ville Automatic made specifically for the UK market.
Analysis of Your Images
1. Inside Caseback Markings (image.png & image_2.png)
OMEGA WATCH Co. Triangle Stamp: Authentic vintage Omega factory stamp.
106: The factory/case tool designation.
366 5445 (Reference Number): Confirms the official Omega model reference 366.5445 (an integrated bracelet 9ct gold De Ville model).
OWC: Official sponsor mark for Omega Watch Company registered at the British Assay Office.
9 .375: Standard British hallmark for 9-carat gold (37.5% pure gold).
The Hallmark Symbols (S and Anchor):
The Anchor symbol represents the Birmingham Assay Office.
The “S” in a shield is the Birmingham date letter for 1967/1968 (the Birmingham hallmarking year ran from July 1967 through June 1968).
2. Dial & Case (image_3.png)
Dial: Features the clean OMEGA AUTOMATIC and DE VILLE split branding at 6 o’clock (without “Seamaster”), matching the post-1967 separation of the De Ville line.
Bracelet: Features an original 9ct gold woven mesh/Milanese integrated bracelet typical for Ref. 366.5445.
3. Exterior Caseback (image_4.png)
Plain Recessed Backing: Confirms a 100% factory-correct bare exterior.
As verified by the hallmarks, UK-cased 9ct gold Omega watches were produced with smooth, plain backs without the Hippocampus medallion.
Summary
Your watch is completely genuine, all components match the reference 366.5445, and the Birmingham hallmarks definitively date the gold case production to 1967–1968.
Comes in original red 1960’s Onega box.
Lovely Set. Very high Quality 1960’s vintage Automatic Omega dress watch with perfect original dial. Rare to find.
