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The Encyclopedia of Horology

Movement · Chronograph pocket watch movement

Jaeger-LeCoultre chronograph pocket watch movement

Partially verified

This item is an unhoused manual chronograph pocket watch movement catalogued under Lot 0026 by Auction Wallstreet. The gilt movement plate is marked 'LEMANIA SWISS' alongside the number '870525' on an adjacent bridge cock, while a curved chronograph bridge carries the signature 'JAEGER' and 'LECOULTRE CO.'. The listing reports a size of 56mm. Visible components include a balance assembly with an index regulator marked 'S R' and 'F A', steel chronograph operating levers, gears, and jewel bearings.

View of the gilt chronograph pocket watch movement showing balance, levers, and Lemania and Jaeger-LeCoultre markings
View of the gilt chronograph pocket watch movement showing balance, levers, and Lemania and Jaeger-LeCoultre markings — Auction Wallstreet. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.liveauctioneers.com
Category
Movement · Chronograph pocket watch movement
Maker / attribution
Jaeger-LeCoultre
Reference
Not recorded
Catalogue / lot identifier
0026
Source-reported date
Not established
Country
Switzerland
Source-reported serial
870525

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

Identity and Branding Observations

The item is catalogued by the seller under the brand heading "Brand: Jaeger le Coultre" as a "Chronograph watch movement". Physical markings on the movement plates reflect dual attribution: a curved chronograph bridge is engraved with "JAEGER" and "LECOULTRE CO.", while an upper plate edge displays "LEMANIA SWISS".

Directly adjacent to the Lemania stamp, a bridge cock carries the numerical marking "870525". The auction listing provides no narrative context detailing the relationship between the Lemania manufacturing stamp and the Jaeger-LeCoultre signature.

Evidence for this section
  • “Brand: Jaeger le Coultre”
  • “Chronograph bridge engraved with 'JAEGER' and 'LECOULTRE CO.'.”
  • “Bridge marked 'LEMANIA SWISS' along the upper plate perimeter.”
  • “Adjacent bridge cock stamped with serial number '870525'.”

Visible Construction and Mechanism

The lot consists of an unhoused manual-wind chronograph pocket watch mechanism. The listing documents a dimension of "Size: 56mm", though it does not clarify whether this refers to plate diameter, total movement spread, or an intended case size.

Visible components include a balance assembly equipped with a balance cock fitted with an index regulator marked "S R" and "F A", alongside jewel bearings, gear trains, and steel chronograph operating levers. Noticeable oxidation, pitting, and discoloration are visible on several steel chronograph levers across the mechanism.

Evidence for this section
  • “Size: 56mm”
  • “Balance cock fitted with index regulator marked 'S R' and 'F A'.”
  • “Noticeable oxidation, pitting, and discoloration on several steel chronograph levers.”

Source Documentation and Condition Limitations

The auction description is minimal, classifying the piece simply as "Type: Pocket watch" with "Movement: Manual Chronograph". The seller provides no specific condition narrative, stating only: "Condition report: Pre-owned. Refer to photos for more information".

Because this is an unhoused bare movement, no case, dial, crystal, or hands are present. Additionally, the source documentation does not record timekeeping performance, chronograph operational status, or whether all underlying components beneath the top plates remain complete.

Evidence for this section
  • “Type: Pocket watch”
  • “Movement: Manual Chronograph”
  • “Condition report: Pre-owned. Refer to photos for more information”

Open research questions

  • Does the stamped number '870525' correspond to Lemania's movement production numbering or a Jaeger-LeCoultre serial record?
  • Which underlying Lemania chronograph ebauche calibre constitutes the base of this 56mm movement?
  • Are the chronograph functions fully operational given the visible surface oxidation and pitting on the steel levers?

Source evidence

Recorded claims and source quotations for Jaeger-LeCoultre chronograph pocket watch movement
FieldSource-reported valueSource quotation
Lot Number0026“Lot 0026”
BrandJaeger le Coultre“Brand: Jaeger le Coultre”
Movement TypeManual Chronograph“Movement: Manual Chronograph”
Reported Size56mm“Size: 56mm”
Item DescriptionChronograph watch movement“Description: Chronograph watch movement”
Watch TypePocket watch“Type: Pocket watch”
Seller Condition SummaryPre-owned“Condition report: Pre-owned. Refer to photos for more information”

Visible details

  • Bridge marked 'LEMANIA SWISS' along the upper plate perimeter.
  • Adjacent bridge cock stamped with serial number '870525'.
  • Chronograph bridge engraved with 'JAEGER' and 'LECOULTRE CO.'.
  • Balance cock fitted with index regulator marked 'S R' and 'F A'.
  • Noticeable oxidation, pitting, and discoloration on several steel chronograph levers.

Research qualifications

  • Unhoused movement only; case, dial, and hands are not present.
  • Dual branding with Lemania and Jaeger-LeCoultre is present without explanatory text in the auction listing.

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

Consulted source

Jaeger Le Coultre Chronograph Pocket Watch Movement - Feb 22, 2025 | Auction Wallstreet In Fl

Reviewed 2026-10-21 · Record 217ed8e61a

Terms in this record

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