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The Encyclopedia of Horology

Wristwatch · Cushion-case wristwatch

Gents Waltham Riverside Maximus Wrist Watch

Partially verified

Source reports this gentleman's Waltham wristwatch pairs a 14-carat gold cushion-shaped case made by the Star Watch Case Company with a 19-jewel Riverside Maximus manual-wind movement. The seller dates the case to the 1920s and notes that the movement and case were put together at a later stage. According to dealer descriptions, the movement features a Church 1892 patent regulator, screw-set jewels in gold settings, and a Breguet hairspring. The watch case measures 30 mm wide by 30 mm high excluding the crown and lugs. The light-toned dial is signed 'WALTHAM' with black Arabic numerals, an outer minute track, blued steel hands, and a subsidiary seconds subdial at 6 o'clock.

Three-quarter front view of Waltham Riverside Maximus cushion-cased wristwatch on display stand
Three-quarter front view of Waltham Riverside Maximus cushion-cased wristwatch on display stand — The Vintage Wrist Watch Company / Antiques Atlas. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.antiques-atlas.com
Category
Wristwatch · Cushion-case wristwatch
Maker / attribution
Waltham
Reference
Not recorded
Catalogue / lot identifier
as170a12049
Source-reported date
1920s
Country
United States

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 Form and Construction

The timepiece features a cushion-shaped yellow gold case with curved lugs and a fluted winding crown situated at the 3 o'clock position. Seller measurements record the case as 30 mm wide excluding the winding crown and 30 mm high excluding the lugs.

The case is reported to be 14-carat gold made for Waltham by the Star Watch Case Company. Noted physical condition details include very small areas of rubbing to the lugs and prising areas on the case back that have opened up where the back has previously been removed.

Evidence for this section
  • “Cushion-shaped yellow gold case with curved lugs and fluted crown at 3 o'clock”
  • “measures 30mm wide excluding the winding crown and 30mm high excluding the lugs”
  • “The case is 14ct gold and was made for Waltham by the Star Watch Case Company.”
  • “just very small areas of rubbing to the lugs but difficult to see with the naked eye”
  • “There are two areas where the case back has been removed, and the prising areas have opened up (please see photos).”

Dial and External Presentation

Visible dial features include a light-toned dial signed 'WALTHAM' below the 12 o'clock numeral, black Arabic numerals, an outer minute track, and a subsidiary seconds dial at 6 o'clock.

The seller describes blued steel hands and notes that the lens is in good condition. The watch is fitted with a modern black alligator-grain leather strap and comes with a new presentation box.

Evidence for this section
  • “Light-toned dial with black Arabic numerals, minute track, and subsidiary seconds dial at 6 o'clock”
  • “Dial signed 'WALTHAM' below the 12 o'clock numeral”
  • “The signed dial has blued steel hands, a subsidiary seconds dial and outer minute markers.”
  • “The lens is in good condition.”
  • “Blued steel handset mounted on a modern black alligator-grain leather strap”
  • “The watch comes in a new presentation box.”

Movement Description and Pairing Status

The seller describes the movement as a 19-jewel Riverside Maximus hand-winding movement featuring a Church 1892 patent regulator, screw-set jewels in gold settings, and a Breguet hairspring. The movement itself is not visible in the provided photograph.

The seller dates the Star Watch Case Company case to the 1920s and states that the movement and case were put together at some stage rather than representing an original factory pairing.

Evidence for this section
  • “The watch has a high grade 19 jewel Riverside Maximus hand-winding movement which is working nicely.”
  • “The movement has a Church 1892 patent regulator, screw-set jewels in gold settings and a Breguet hairspring.”
  • “The case dates back to the 1920s so we can deduce that the case and movement have been put together at some stage, and they sit very well together.”

Open research questions

  • What is the serial number on the Waltham Riverside Maximus movement to confirm its exact year of manufacture?
  • What serial numbers or hallmarks are stamped inside the Star Watch Case Company case back?
  • Was the movement recased historically by a jeweler or assembled in modern times from disparate parts?

Source evidence

Recorded claims and source quotations for Gents Waltham Riverside Maximus Wrist Watch
FieldSource-reported valueSource quotation
Movement Grade19 jewel Riverside Maximus“high grade 19 jewel Riverside Maximus hand-winding movement”
Regulator TypeChurch 1892 patent regulator“The movement has a Church 1892 patent regulator”
Case Material14ct gold“The case is 14ct gold”
Case ManufacturerStar Watch Case Company“made for Waltham by the Star Watch Case Company”
Dimensions30mm wide by 30mm high excluding crown and lugs“measures 30mm wide excluding the winding crown and 30mm high excluding the lugs”
HairspringBreguet hairspring“screw-set jewels in gold settings and a Breguet hairspring”
PackagingNew presentation box included“The watch comes in a new presentation box.”
Case Opening MarksPrising areas on case back opened up from prior removal“There are two areas where the case back has been removed, and the prising areas have opened up (please see photos).”

Visible details

  • Cushion-shaped yellow gold case with curved lugs and fluted crown at 3 o'clock
  • Light-toned dial with black Arabic numerals, minute track, and subsidiary seconds dial at 6 o'clock
  • Blued steel handset mounted on a modern black alligator-grain leather strap
  • Dial signed 'WALTHAM' below the 12 o'clock numeral

Research qualifications

  • The seller explicitly notes that the 1920s case and Riverside Maximus movement were combined at some point rather than being original factory pairings
  • Movement and interior case hallmarks are not visible in the primary photograph
  • Seller notes prising marks where the case back has been previously opened

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

Consulted source

Antiques Atlas - Gents Waltham Riverside Maximus Wrist Watch as170a12049

Reviewed 2026-10-21 · Record 2cef05a69e

Terms in this record

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