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The Encyclopedia of Horology

Wristwatch · Five-minute repeater conversion wristwatch

Tiffany & Co. 18K Yellow Gold Five-Minute Repeater Conversion Wristwatch

Partially verified

This circa 1920 timepiece is an 18K yellow gold five-minute repeating watch converted for wrist wear. The case measures 34 mm in diameter and 10 mm in depth, fitted with curved wire lugs and a winding crown positioned at 12 o'clock. Its white enamel dial features black Arabic numerals, an outer minutes track with red five-minute designations, and blued steel spade and whip hands, signed Tiffany & Co. New York. Powering the watch is a 31-jewel manual-wind movement featuring a five-minute repeater mechanism striking hours followed by five-minute intervals.

Front view of the 18K yellow gold Tiffany & Co. five-minute repeater conversion wristwatch on a black strap
Front view of the 18K yellow gold Tiffany & Co. five-minute repeater conversion wristwatch on a black strap — Renaissance Antiques. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.renaissanceantiques.com
Category
Wristwatch · Five-minute repeater conversion wristwatch
Maker / attribution
Tiffany & Co.
Reference
Not recorded
Catalogue / lot identifier
SSHO 783
Source-reported date
circa 1920
Country
Switzerland
Source-reported serial
77760

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 Architecture and Conversion Format

The watch is housed in an 18K yellow gold case measuring 34 mm in diameter and 10 mm in depth. Described by the source as having been converted to a wristwatch, the configuration features a winding crown positioned at 12 o'clock between two slender lugs attached to a black leather strap.

Along the right flank of the yellow gold case, a repeater slide is visible. Internal case markings and specific details regarding the conversion process are not recorded in this source.

Evidence for this section
  • “Crafted in 18K yellow gold, the 34mm case measures a sleek 10mm in depth.”
  • “Crown positioned at 12 o'clock between two slender lugs attached to a black leather strap”
  • “Repeater slide visible along the right side of the yellow gold case”

Dial Design and Display

The watch features a white enamel dial described as original, fitted with blued steel spade and whip hands. The layout displays black Arabic numerals and red five-minute markers around the perimeter.

Below the 12 o'clock position, the dial is signed 'TIFFANY & CO. NEW YORK'. An auxiliary seconds register is not visible on the dial surface.

Evidence for this section
  • “The time displays on the original enamel dial with blued steel spade and whip hands.”
  • “White enamel dial with black Arabic numerals and red five-minute markers around the perimeter”
  • “Dial signed 'TIFFANY & CO. NEW YORK' below 12 o'clock”

Reported Movement and Mechanism

According to the seller's cataloguing, the watch is powered by a 31-jewel manual-wind movement recorded under movement/serial number 77760. The mechanism features a five-minute repeater complication that strikes the current hour first, followed by the count of five-minute intervals past the hour.

The movement is not visible in the provided photographic record. While the seller notes the caliber 'was likely produced by Patek Philippe,' movement markings or ebauche stamps are not illustrated or confirmed in the source.

Evidence for this section
  • “Keeping the time is a high-grade, 31-jewel manual wind movement that was likely produced by Patek Philippe.”
  • “The repeater first strikes the current hour, and then the number of 5-minute intervals after the hour.”
  • “Movement/Serial #77760”

Open research questions

  • What manufacturer signatures or caliber designations are stamped directly onto the movement plates?
  • Does serial number 77760 correspond to the movement, the case, or Tiffany & Co. retailer records?
  • Does the case retain original pocket watch hallmarks or marks from the conversion workshop that added the lugs?

Source evidence

Recorded claims and source quotations for Tiffany & Co. 18K Yellow Gold Five-Minute Repeater Conversion Wristwatch
FieldSource-reported valueSource quotation
Case Material18K yellow gold“Crafted in 18K yellow gold, the 34mm case measures a sleek 10mm in depth.”
Movement Jewels31 jewels“high-grade, 31-jewel manual wind movement”
ComplicationFive-minute repeater“The repeater first strikes the current hour, and then the number of 5-minute intervals after the hour.”
Serial Number77760“Movement/Serial #77760”
DialEnamel dial with blued steel spade and whip hands“The time displays on the original enamel dial with blued steel spade and whip hands.”
Case Depth10 mm“Crafted in 18K yellow gold, the 34mm case measures a sleek 10mm in depth.”
Approximate DateCirca 1920“dates to approximately 1920”

Visible details

  • White enamel dial with black Arabic numerals and red five-minute markers around the perimeter
  • Crown positioned at 12 o'clock between two slender lugs attached to a black leather strap
  • Repeater slide visible along the right side of the yellow gold case
  • Dial signed 'TIFFANY & CO. NEW YORK' below 12 o'clock

Research qualifications

  • Movement is not visible in the photo; the source notes the movement was 'likely produced by Patek Philippe' without definitive confirmation
  • Converted from an earlier pocket or pendant watch; case back and internal conversion details are not shown

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

Consulted source

Five-Minute Repeater Wristwatch by Tiffany - Renaissance Antiques

Reviewed 2026-10-21 · Record 25b0ee6b4a

Terms in this record

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