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The Encyclopedia of Horology

Pocket watch · Pendant watch

Longines diamond-accented pendant watch with brooch

Partially verified

This is a Swiss-made Longines lady's open-face pendant watch, sold as a set with a matching platinum filigree brooch. The watch features an 18kt yellow gold case with a guilloche enamel finish on the bezel and caseback. The reverse is decorated with an applied platinum filigree openwork motif in a snowflake design, featuring bezel-set rose-cut diamonds. The watch includes an ornate platinum bow, also accented with prong-set rose-cut diamonds. The dial is gilt metal with black enamel Arabic numeral hour markers, blued steel moon hands, and a small seconds register at the 6 o'clock position. The timepiece houses a 17-jewel mechanical movement. The accompanying platinum filigree brooch is similarly accented with bezel-set rose-cut diamonds. The total weight of the watch is approximately 14.2 dwt, with the brooch weighing approximately 4.00 dwt. The case diameter is 27.75 mm.

The Longines pendant watch and matching brooch featuring diamond-set platinum filigree.
The Longines pendant watch and matching brooch featuring diamond-set platinum filigree. — Clarke Auction Gallery (via Invaluable). Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.invaluable.com
Category
Pocket watch · Pendant watch
Maker / attribution
Longines
Reference
Not recorded
Catalogue / lot identifier
537
Source-reported date
Not established
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Exterior Details

The watch is housed in an 18kt yellow gold open-face case measuring 27.75 mm in diameter. The exterior is finished with guilloché enamel on both the bezel and the reverse. A significant feature is the applied platinum filigree openwork snowflake on the caseback, which is integrated with bezel-set rose-cut diamonds. The watch incorporates an ornate platinum bow at the pendant, which is also embellished with prong-set rose-cut diamonds.

The assembly includes an additional matching brooch, described as unmarked platinum filigree openwork, also featuring rose-cut diamonds. The winding crown is made of platinum and includes diamond accents.

Evidence for this section
  • “caseback and bezel decorated in guilloché enamel”
  • “reverse further accented with an applied platinum filigree openwork snowflake accented with bezel-set rose-cut diamonds”
  • “ornate platinum bow accented with prong-set rose-cut diamonds”

Dial and Movement

The watch uses a gilt metal dial that displays Arabic numerals for the hours, rendered in black enamel. Timekeeping is indicated by blued steel hands in a moon style. A dedicated small seconds register is located at the 6 o'clock position on the dial. The overall presentation matches the decorative nature of the exterior case.

The timepiece is powered by a 17-jewel mechanical movement of Swiss origin. The auction description notes that the watch was running prior to the sale, though it does not provide information regarding service history or mechanical precision. The auction house explicitly states that all watches are sold as is, regardless of current functionality.

Evidence for this section
  • “gilt metal dial with Arabic numeral hours chapter executed in black enamel”
  • “small seconds register located at the 6 o’clock position”
  • “fine Swiss-made Longines 17-jewel mechanical movement”

Condition and Attribution

The auction description reports the object is in good condition. The noted wear includes light surface scratches and minor dings or dents consistent with previous usage. The auction house confirms that all diamonds are currently present and accounted for on the watch and the associated brooch.

The watch and brooch originate from an estate in Scarsdale, New York. No specific date of manufacture is provided for the piece. Interested parties were advised to review the provided photographic documentation to evaluate the condition and details of each component, as the lot is offered without original boxes, papers, or additional parts.

Evidence for this section
  • “Good, with light surface scratches and minor dings/dents”
  • “All diamonds are present and accounted for”
  • “From a Scarsdale, NY estate”

Open research questions

  • What is the specific calibre of the 17-jewel movement?
  • Can the decorative style be attributed to a specific design period?

Source evidence

Recorded claims and source quotations for Longines diamond-accented pendant watch with brooch
FieldSource-reported valueSource quotation
MakerLongines“Swiss Longines”
Material18kt yellow gold and platinum“lady’s 18kt yellow gold, platinum, guilloche, and diamond-accented open-face pocket watch”
Movement17-jewel mechanical“fine Swiss-made Longines 17-jewel mechanical movement”
DialGilt metal with Arabic numerals“a gilt metal dial with Arabic numeral hours chapter executed in black enamel”
Diameter27.75 mm“case measures approx. 27.75 mm in diameter”
ProvenanceScarsdale, NY estate“From a Scarsdale, NY estate.”

Visible details

  • Platinum filigree snowflake decoration on caseback
  • Diamond-accented platinum crown
  • Gilt metal dial with Arabic numerals
  • Matching diamond-set filigree brooch

Research qualifications

  • Movement calibre not specified
  • Manufacturing date not provided
  • Mechanical accuracy unverified

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

JEWELRY. Longines 18kt Gold Guilloche, and Diamond

Reviewed 2026-10-26 · Record e96629dd8d

Terms in this record

Glossary explanations for terms named in this object’s record.

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