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The Encyclopedia of Horology

Wristwatch · Chronograph

Croton Stainless Steel 'Chronomaster Aviator Sea Diver' Wristwatch

Partially verified

This Croton 'Chronomaster Aviator Sea Diver' is a stainless steel manual-wind chronograph wristwatch measuring 37.00 mm in diameter. The black dial is signed 'CROTON 1878' and 'CHRONOMASTER AVIATOR SEA DIVER', featuring luminous block numerals, an outer tachymeter scale, and twin registers including a 60-second subdial at 9 o'clock and a 30-minute counter with a red 5-minute countdown wedge at 3 o'clock. The case features two pushers flanking a winding crown and a bidirectional turning bezel calibrated to 60 units. The source reports a 17-jewel Valjoux 7733 manual-wind movement signed Croton Time Corp, fitted with a later stainless steel link bracelet.

Croton Chronomaster Aviator Sea Diver stainless steel wristwatch on link bracelet
Croton Chronomaster Aviator Sea Diver stainless steel wristwatch on link bracelet — Freeman's / Hindman. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
hindmanauctions.com
Category
Wristwatch · Chronograph
Maker / attribution
Croton
Reference
953019 105 B 84227
Catalogue / lot identifier
98
Source-reported date
Not established
Country
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

Object Identity and Construction

The Croton Chronomaster Aviator Sea Diver is a manual-wind chronograph wristwatch featuring a 37.00 mm stainless steel case. The timepiece is equipped with a bidirectional turning bezel calibrated to 60 units, and chronograph pushers at 2 and 4 o'clock.

The case back is secured by a screw-on back and is stamped with reference '953019 105 B 84227' and the inscription 'WATER + SHOCKRESISTANT ALL STAINLESS STEEL SWISS MADE'. An internal inspection by the auction house reports an internal stamp reading 'CROTON TIME CORP SWISS'.

Evidence for this section
  • “37.00 mm case diameter”
  • “bidirectional turning bezel calibrated to 60 units”
  • “chronograph pushers at 2 and 4 o'clock”
  • “screw on case back”
  • “Case back stamp: WATER + SHOCKRESISTANT ALL STAINLESS STEEL SWISS MADE 953019 105 B 84227.”
  • “Inner case back stamp: CROTON TIME CORP SWISS.”

Dial and Mechanism

The black dial is signed 'CROTON' and features luminous block numerals, an outer tachymeter chapter ring, and luminous steel baton hands with a red center chronograph seconds hand. It includes a 60-second subdial at 9 o'clock and a 30-minute subdial at 3 o'clock with a red 5-minute countdown wedge.

The movement is identified as a Valjoux 7733 17-jewel manual-wind movement, signed 'CROTON TIME CORP'. The watch is fitted with a later stainless steel matte link bracelet with an adjustable fold-over clasp.

Evidence for this section
  • “black dial signed CROTON”
  • “30 minute subdial at 3 o'clock with red triangle 5-minute countdown”
  • “60 seconds subdial at 9 o'clock”
  • “Valjoux 7733 17 jewel manual wind movement signed CROTON TIME CORP”
  • “later stainless steel matte link bracelet”

Condition and Observations

The acrylic crystal exhibits multiple small cracks and scratches across the surface. The case and bezel show superficial scratches consistent with wear.

The source reports the movement winds, sets, and runs with the chronograph function operational. The source condition report notes 'date progressing', though the dial does not exhibit a date aperture.

Evidence for this section
  • “The crystal has lots of small cracks and scratches to the surface.”
  • “The case and bezel have superficial scratches consistent with wear.”
  • “The watch winds and sets and runs with chronograph function working and date progressing”

Open research questions

  • Is the 'date progressing' report in the source a transcription error, or does the movement include a hidden date wheel without a corresponding dial aperture?
  • Can the reference number 953019 105 B 84227 be verified against official Croton manufacturing records?

Source evidence

Recorded claims and source quotations for Croton Stainless Steel 'Chronomaster Aviator Sea Diver' Wristwatch
FieldSource-reported valueSource quotation
Case Diameter37.00 mm“37.00 mm case diameter”
MovementValjoux 7733 17 jewel manual wind movement“Valjoux 7733 17 jewel manual wind movement signed CROTON TIME CORP”
BezelBidirectional turning bezel calibrated to 60 units“bidirectional turning bezel calibrated to 60 units”
Inner Case Back StampCROTON TIME CORP SWISS“Inner case back stamp: CROTON TIME CORP SWISS.”
Case Back StampWATER + SHOCKRESISTANT ALL STAINLESS STEEL SWISS MADE 953019 105 B 84227“Case back stamp: WATER + SHOCKRESISTANT ALL STAINLESS STEEL SWISS MADE 953019 105 B 84227.”
MovementValjoux 7733 17 jewel manual wind“Valjoux 7733 17 jewel manual wind movement signed CROTON TIME CORP”

Visible details

  • Black dial with two recessed subsidiary dials and a center red chronograph seconds hand.
  • The 30-minute subdial at 3 o'clock includes a red 5-minute regatta-style countdown segment.
  • Bidirectional black bezel calibrated for both 60-minute elapsed timing and 12-hour dual tracking, with an inverted white triangle at 12 o'clock.
  • Acrylic crystal shows multiple fine scratches and crazing across the perimeter and central surface.

Research qualifications

  • The movement and case back interiors are not visible in the supplied photograph; movement details rely on catalog descriptions.
  • The source condition report states 'date progressing', though the dial lacks a date aperture.

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

Consulted source

Croton, Stainless Steel 'Chronomaster Aviator Sea Diver'... | Freeman's

Reviewed 2026-10-22 · Record 72233aa815

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

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