Jaeger-LeCoultre Master Ultra Thin Master Ultra Thin Date Stainless Steel / Silver / Alligator
Reference 1238420
About this watch
The Jaeger-LeCoultre Master Ultra Thin Date is a masterpiece of watchmaking, blending classic elegance with modern technology. This exquisite timepiece is the epitome of luxury, featuring a stainless steel case measuring 39mm in diameter and only 7.8mm in height. The round shape is timeless, while the open case back allows you to admire the intricate mechanics of the caliber 899/1 automatic movement. With a water resistance of up to 50 meters, this watch is versatile enough for daily wear. The silver sunburst dial creates a play of light that enhances its charm, and with stick and dot indexes, along with Dauphine hands, the watch is designed for optimal readability. The high-quality alligator leather strap adds to its luxurious feel, while the classic black color complements the silver dial beautifully.
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Key Features
- Stainless steel case measuring 39mm in diameter and 7.8mm in height
- Caliber 899/1 automatic movement with 219 components working in harmony
- Power reserve of 38 hours, ensuring reliability
- Water resistance up to 50 meters for daily wear
- Silver sunburst dial with stick and dot indexes and Dauphine hands
- High-quality alligator leather strap for luxurious feel
Specifications
- Brand
- Jaeger-LeCoultre
- Family
- Master Ultra Thin
- Model
- Master Ultra Thin Date Stainless Steel / Silver / Alligator
- Reference
- 1238420
- Movement
- 899-1
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- Silver
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
Jaeger-LeCoultre Master Ultra Thin Silver Dial 145.8.79.S 33MM
This Jaeger-LeCoultre Master Ultra Thin Silver Dial is a 33mm time-only mechanical manual watch with a stainless steel case and silver dial.
- Condition: 95%
- Case size: 33 mm diameter
- Movement: Mechanical Manual (cal. 849)
- Function: Time Only
![[WTS] Jaeger-LeCoultre Master Ultra Thin Tourbillon 40mm - Box & Papers](https://external-preview.redd.it/YTJsbDRvaXNjbHllMRokMAKkVD3MhWN_pHWY8dQFWfDDdqW94QsSKj03yyKw.png?format=pjpg&auto=webp&s=613d765093eb2bef26da0a49a73183510694de4d)
Jaeger-LeCoultre Master Ultra Thin Tourbillon 40mm - Box & Papers
A Jaeger-LeCoultre Master Ultra Thin Tourbillon featuring an automatic tourbillon movement, 40mm gold case, and a beige Eggshell dial.
- Condition: Excellent overall condition
- Case size: 40mm diameter
- Thickness: 11mm
- Movement: Jaeger-LeCoultre caliber 982 with Tourbillon Escapement
Jaeger-LeCoultre Master Ultra Thin Moon 34mm Steel Q1258420145.8.64.S Leather Automatic
The Jaeger-LeCoultre Master Ultra Thin Moon is a pre-owned, automatic self-winding watch with a silver dial and sapphire crystal. It features date and moon phase functions, and comes with a JLC Blue Leather band and steel fold clasp.
- Condition: Very good condition
- Case Diameter: 34mm
- Water Resistance: 3 bar

Jaeger LeCoultre Master Ultra Thin Moon - 39mm - 1368430 ( unworn / 2025 )
A Jaeger LeCoultre Master Ultra Thin Moon, featuring a stainless steel case and automatic movement. This watch is part of the company's Master collection and comes with all original packaging and documentation.
- Condition: unworn
- Case Size: 39mm diameter
- Movement: JLC Calibre 925
Jaeger LeCoultre JLC Master Ultra Thin Perpetual Calendar
The Jaeger LeCoultre JLC Master Ultra Thin Perpetual Calendar features a 9.2mm ultra-thin case, stainless steel construction, and a black sunray-brushed dial with polished rhodium-plated appliques.
- Condition: Excellent condition
- Case size: 39mm
- Thickness: 9.2mm
- Movement type: Mechanical automatic winding

2017 Jaeger LeCoultre Ref: Q1368420/176.8.64.S Master Ultra Thin Moon
The Jaeger LeCoultre Master Ultra Thin Moon is a 39mm ultra thin stainless steel watch featuring an excellent silver dial with moonphase subdial and dauphine hands.
- Condition: Excellent
- Case size: 39mm diameter
- Bracelet/strap: 21mm black leather JLC strap with JLC double fold clasp
![[WTS] Jaeger-Lecoultre JLC Master Ultra Thin Moon Q1368420 FULL SET](https://preview.redd.it/r643cjcavewe1.jpg?width=640&crop=smart&auto=webp&s=c2347a37a4c075566c53e68d097dc5234590ec8d)
Jaeger-Lecoultre JLC Master Ultra Thin Moon Q1368420 FULL SET
A Jaeger-LeCoultre Master Ultra Thin Moon watch, a timeless piece that was never worn by its owner. The watch comes in full set with various accessories.
- Condition: Very Good
- Case Condition: ding on the crown-side, faint swirlies on non-crown side
- Strap Condition: like-new croc leather deployant strap
- Service History: unknown
![[WTS] Jaeger-LeCoultre JLC Master Ultra Thin Moon Silver Full Set 2015 MINT CONDITION Q1368420](https://preview.redd.it/nnkxa4kpd4we1.jpg?width=640&crop=smart&auto=webp&s=94db8a10662f216dce0b2da5636536b85a2ede62)
Jaeger-LeCoultre JLC Master Ultra Thin Moon Silver Full Set 2015 MINT CONDITION Q1368420
The Jaeger-LeCoultre JLC Master Ultra Thin Moon is a classic ultra-thin moonphase watch with date, featuring a 39mm case and sunburst silver dial. It's in excellent working condition, keeping time smoothly and having buttery movements.
- Condition: Mint condition
- Case Size: 39mm diameter
- Movement Status: Excellent timekeeping
- Shipping Included: Fully-insured international shipping via DHL/Fedex

BNIB Jaeger-LeCoultre MASTER ULTRA THIN MOON STAINLESS STEEL 2025 FULL SET
A Jaeger-LeCoultre Master Ultra Thin Moonphase watch in stainless steel with a silver dial, featuring a 39mm case and a black alligator leather strap. The watch is complete with its original packaging and comes under an 8-year factory warranty.
- Condition: Brand New In Box (BNIB)
- Case size: 39mm
- Material: stainless steel
- Strap material: black alligator leather