Jaeger-LeCoultre Master homages
Master Control line designs, including the Master Geographic and Master Moonphase. No homage of the Jaeger-LeCoultre Master is on Bewrist yet.
40 mm across0 homages
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Original specifications
Sizes and specifications apply to the version named below. Other versions can differ.
Master Geographic model scope
explicitly named geographic model; steel 39 mm reference
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 39 mm | Master Geographic Q1428421 | HourstrikerMaster Geographic Q1428421 | Ashford Sources agree. Independent publishers agree. |
| Lug to lug | 46.5 mm | Jaeger-LeCoultre Master Geographic Q1428421 | EveryWatch (European Watch Company listing) One cited source. EveryWatch identifies the underlying exact-reference listing and explicitly labels 46.5 mm as lug-to-lug. Bernard Watch instead labels the same 46.5 mm “height”; its value corroborates but endpoint wording is less clear. |
| Thickness | 12 mm | Master Geographic Q1428421 | Ashford One cited source. Single successful page body supports this candidate-scoped value. |
| Lug width | 20 mm | Master Geographic Q1428421 | Bernard Watch One cited source. Bernard Watch lists 20 mm lug width for the exact reference. |
| Movement calibre | 939A | Master Geographic Q1428421 | Hourstriker One cited source. Single successful page body supports this candidate-scoped value. |
| Water resistance | 50 m | Master Geographic Q1428421 | Hourstriker One cited source. Single successful page body supports this candidate-scoped value. |
| Power reserve | 43 hours | Master Geographic Q1428421 | Hourstriker One cited source. Single successful page body supports this candidate-scoped value. |
Sources and unconfirmed details
- Master Geographic Q1428421 | Hourstriker, read 2026-10-07T07:53:21Z
- Master Geographic Q1428421 | Ashford, read 2026-10-07T07:53:21Z
- Master Geographic Q1428421 | Bernard Watch, read 2026-10-07T10:02:00Z
- Jaeger-LeCoultre Master Geographic Q1428421 | EveryWatch (European Watch Company listing), read 2026-10-07
Master Ultra Thin Moon model scope
explicit Moonphase family comparator; current 39 mm steel model, not a historical Master Moonphase reference The 2025 copper-dial Q1368460 and the silver-dial Q1368430 are both published with paired JLC designation 109.8.A5.S; both are steel 39 mm Master Ultra Thin Moon cases using Calibre 925. The selected 46 mm lug-to-lug value is owner-reported on a Q1368430 specimen and applied to this documented shared case/model designation. It is not a direct Q1368460 specimen measurement.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 39 mm | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultreNew: Copper-Dial Jaeger-LeCoultre Master Ultra Thin Moon / Date | Fratello Sources agree. Jaeger-LeCoultre and Fratello independently give this exact-reference measurement. |
| Lug to lug | 46 mm | [WTS] 2023 JLC Master Ultra Thin Moon Q1368430 $8,000 shipped One cited source. Selected from an owner-reported Q1368430 specimen and applied to Q1368460 because the readable BIG MOON and EveryWatch/Komehyo bodies pair both steel 39 mm Calibre 925 Moon references with JLC designation 109.8.A5.S. No direct Q1368460 specimen span was found. |
| Thickness | 9.3 mm | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultreNew: Copper-Dial Jaeger-LeCoultre Master Ultra Thin Moon / Date | Fratello Sources agree. Jaeger-LeCoultre and Fratello independently give this exact-reference measurement. |
| Lug width | 21 mm | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre One primary source. Single successful page body supports this candidate-scoped value. |
| Movement calibre | 925 | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre One primary source. Single successful page body supports this candidate-scoped value. |
| Water resistance | 50 m | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre One primary source. Single successful page body supports this candidate-scoped value. |
| Case length | Not confirmed | No sourced value selected for this scope. |
| Power reserve | 70 hours | Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre One primary source. Single successful page body supports this candidate-scoped value. |
Sources and unconfirmed details
- No selected exact-candidate value yet; this field remains open for further source searches.
- Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre, read 2026-10-07T07:53:21Z
- New: Copper-Dial Jaeger-LeCoultre Master Ultra Thin Moon / Date | Fratello, read 2026-10-07T08:05:00Z
- 2023 Jaeger-LeCoultre Master Ultra Thin Moon Q1368430 owner listing | r/Watchexchange, read 2026-10-07
- Jaeger-Lecoultre opdaterer Master Ultra Thin med to nye kobberfarvede modeller | Time & Crown, read 2026-10-07T09:44:00Z
- Introducing the Master Ultra Thin with an Exclusive New Dial Colour, read 2026-10-07T10:13:00Z
- 2025 Master UT Date and Moon EN, read 2026-10-07T10:13:00Z
- Master Ultra Thin Moon Q1368460 | Jaeger-LeCoultre China, read 2026-10-07
- JAEGER-LECOULTRE Master Ultra Slim Moon Limited to 800 Pieces Q1368460 (109.8.A5.S), read 2026-10-07
- Jaeger-LeCoultre Master Ultra Thin Q1368430 Stainless steel Silver Japan | EveryWatch, read 2026-10-07
- [WTS] 2023 JLC Master Ultra Thin Moon Q1368430 $8,000 shipped, read 2026-10-07
Q4128421Shown in the photograph
Manifest pictured scope Q4128421. Existing family candidates are excluded.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 40 mm | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
| Lug to lug | Not confirmed | Master Control Geographic Q4128421 Exact Q4128421 manufacturer body lacks full case span. Search results for older 39 mm Q1428421 and unrelated watches were rejected. |
| Thickness | 10.96 mm | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
| Lug width | 20 mm | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
| Movement calibre | 939 | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
| Water resistance | 50 m | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
| Power reserve | 70 hours | Master Control Geographic Q4128421 One primary source. Case thickness 10.96 mm; movement thickness 4.9 mm is excluded. |
Sources and unconfirmed details
- Exact Q4128421 manufacturer body lacks full case span. Search results for older 39 mm Q1428421 and unrelated watches were rejected.
- Master Control Geographic Q4128421, read 2026-10-07