Skip to product information
Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421

Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421 Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel…

Reference Q1238421

Full watch configuration

Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421

$9,299.00

By Jaeger-LeCoultre

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421

Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421

Current Catalogue Asking Price:

Your Offer

$

Submit your offer for review. Availability and the final price require confirmation.

Preferred Contact Method
I have a trade-in / add a note

Reserve with $200

Jaeger-LeCoultre Master Ultra Thin Date 39mm Steel Silver Dial Leather Strap Q1238421

Catalogue watch price: $9,299.00 USD

Your $200 deposit is applied to the watch’s purchase price. It is refundable only if Bizak & Co. cannot fulfill your order.

Estimated remaining balance: $. Pay by bank wire or cryptocurrency after we confirm your watch and final invoice. Shipping and applicable taxes are additional.

Shipping details · Return terms

Watch shipping is paid with the final balance: $100 for U.S. overnight delivery or $500 internationally. Applicable taxes and import charges are additional.

After payment, our team starts the tailored search and contacts you to confirm the specific watch and final invoice. A deposit does not guarantee a unit, the listed price or a delivery date.

Need installments? Check eligibility before paying a deposit.

Speak with a Bizak & Co. specialist about this piece

|Call or Text

The Jaeger-LeCoultre Master Ultra Thin Date Q1238421 is a 39mm stainless steel dress watch featuring a clean silver dial with index markers and a refined steel bezel, offered here at Bizak & Co. at the best price. Paired with a supple leather strap, this reference embodies the understated elegance and micro-engineering mastery that define the Master Ultra Thin collection.

The Q1238421 stands apart through its slender steel profile and timeless silver-index dial, making it equally at home beneath a shirt cuff or on display at a formal occasion. Contact Bizak & Co. today to secure this Jaeger-LeCoultre Master Ultra Thin Date for sale and experience white-glove service from purchase through delivery.

Compare it across every Master Ultra Thin Date reference we carry, or browse the full Jaeger-LeCoultre collection at Bizak & Co.

Buy this Master Ultra Thin Date, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

Not the exact one you’re looking for?

Source your dream watch

Learn More

The Jaeger-LeCoultre Master Ultra Thin Date Q1238421 is one of the most accomplished expressions of haute horlogerie restraint available in today's market. Jaeger-LeCoultre, the storied Vallée de Joux manufacture founded in 1833, has long been celebrated for its ability to compress extraordinary mechanical complexity into impossibly slim cases, and the Master Ultra Thin collection stands as the purest distillation of that philosophy. The line traces its ancestry directly to the razor-thin pocket watches and wristwatches the manufacture produced throughout the twentieth century, and the modern references carry that legacy forward with contemporary finishing standards and in-house movements.

At 39mm in diameter, the stainless steel case of the Q1238421 occupies that ideal sweet spot in modern watchmaking — substantial enough to read clearly on the wrist yet compact enough to slip effortlessly under a dress shirt cuff. The steel case is finished to the high standards Jaeger-LeCoultre applies across the Master collection, with polished and brushed surfaces that catch light without ostentation. The steel bezel is clean and unadorned, reinforcing the watch's devotion to pure form.

The silver dial is the visual heart of the Q1238421. Index markers replace numerals, lending the face a graphic clarity and quiet luxury that rewards close inspection. The dial's open, uncluttered layout allows whatever slim hands the manufacture fits to sweep across a surface of calm, reflective silver — a composition that looks equally at ease in boardrooms, at black-tie events, and at refined casual gatherings. The date complication is integrated with the same discretion that governs every design decision on this reference.

The leather strap reinforces the dressy character of the Q1238421, providing a supple, comfortable wearing experience and completing the watch's formal aesthetic in a way no bracelet could. Jaeger-LeCoultre's choice of leather here is deliberate: it keeps the overall weight low, honours the slim silhouette, and signals that this watch was conceived first and foremost as an instrument of quiet elegance rather than sport utility.

Contact Bizak & Co. for current sourcing availability and price. We confirm the specific watch, condition, included accessories and any remaining manufacturer warranty before purchase. Whether you are adding the Q1238421 to an established collection or buying your first piece of Swiss haute horlogerie, our team is ready to assist — contact us or buy online today at bizakandco.com.

Technical Details
Reference
Q1238421
Model
Master Ultra Thin Date
Case material
Stainless Steel
Bracelet material
Leather
Dial
Silver with index markers
Case size
39mm
FAQ

1. What makes the Jaeger-LeCoultre Master Ultra Thin Date Q1238421 special?
The Q1238421 represents Jaeger-LeCoultre's mastery of ultra-thin watchmaking in a 39mm stainless steel package, combining a silver index dial and leather strap for an exceptionally refined dress-watch aesthetic.

2. What movement powers the Jaeger-LeCoultre Master Ultra Thin Date Q1238421?
Jaeger-LeCoultre equips the Master Ultra Thin Date collection with an in-house manufactured mechanical movement, consistent with the manufacture's tradition of producing its own calibres in Le Sentier, Switzerland. For the precise calibre designation and technical specifications of this specific reference, please contact Bizak & Co. directly for confirmed details.

3. What is the case size of the Q1238421?
The Jaeger-LeCoultre Master Ultra Thin Date Q1238421 features a 39mm stainless steel case, a diameter that suits a wide range of wrist sizes and maintains the slim, elegant proportions the collection is known for. The steel construction provides durability while keeping the watch light and comfortable for extended wear.

4. Is the Jaeger-LeCoultre Master Ultra Thin Date suitable for everyday wear?
While the Q1238421 is designed primarily as a dress watch, its stainless steel case and quality leather strap make it a practical choice for daily wear in professional and formal environments. Its understated silver dial and clean index markers ensure it complements both business attire and evening dress with equal ease.

5. What does the dial look like on the Q1238421?
The dial is a classic silver finish adorned with index markers rather than printed numerals, creating a refined and legible face that epitomises the Master Ultra Thin philosophy of elegant minimalism. The silver surface interacts beautifully with light, giving the watch a sense of depth and luxury without unnecessary decoration.

6. How can I buy the Jaeger-LeCoultre Master Ultra Thin Date Q1238421 from Bizak & Co.?
You can purchase the Q1238421 directly online at bizakandco.com or contact our team for personalised assistance and to confirm current availability and best pricing. Contact Bizak & Co. for current sourcing availability and price. We confirm the specific watch, condition, included accessories and any remaining manufacturer warranty before purchase.

Certified Authenticity

Every watch is authenticated before delivery.

Real Family Business

You're buying from genuine people, 30 years in business.

Bizak & Co. Warranty

Every watch is checked by us before shipping.

5 Years Warranty

Our five-year Bizak & Co. warranty covers manufacturing defects affecting mechanical operation under normal use, starting on delivery. It is separate from any remaining manufacturer warranty.

Exclusions include accidental damage, misuse, water damage, cosmetic damage, normal wear, loss and theft. Coverage and service availability for vintage or modified watches are confirmed in writing before purchase.

Read the full warranty terms and service instructions. 

90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

Insured delivery

Insured shipping

U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

You might also like...

Customer Reviews

Read our reviews on Trustpilot

  • Great family business

    Great family business. They went out of their way to make my purchase go smoothly, they definitely earned my watch business!

    Paul

    Read on Trustpilot ↗
  • Good seller

    Good seller. Honest family

    Mateusz

    Read on Trustpilot ↗
  • Honest family company

    Honest family company. I’ve done business many times!

    Mollie

    Read on Trustpilot ↗
  • Trusted Seller

    Trusted Seller, Definitely recommend for all watches purchase!

    Consumer

    Read on Trustpilot ↗
  • Trusted and honest seller

    Trusted and honest seller. Deal with confidence.

    Jean Dib

    Read on Trustpilot ↗