Jaeger-LeCoultre Geophysic True Second 8018420 39mm Steel Silver Dial Papers
Jaeger-LeCoultre Geophysic True Second 8018420 39mm Steel Silver Dial Papers
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Specifications
Product Description
JAEGER-LECOULTRE GEOPHYSIC TRUE SECOND STAINLESS STEEL SILVER FROSTED DIAL - 39.6MM - BOX AND PAPERS
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Here is a wonderful looking discontinued JLC with some interesting cosmetic and mechanical design choices. The “True Second” or “Deadbeat” complication allows the second hand to tick once per second rather than sweeping smoothly like a traditional automatic. Amazing finishing quality on the frosted silver dial, solid rose gold contrast finished rotor, and the Gyrolab “Yoke” style balance as opposed to a standard balance wheel.
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- Reference: 8018420 (Q8018420)
- 39.6mm stainless steel case
- Calibre 770, automatic with Gyrolab balance, 40-hour power reserve
- True Second complication with jumping seconds hand
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Contents: Watch, double box set, 2015 warranty papers, 2024 factory service papers, manual, and OG black alligator leather strap on a branded twin deployant clasp. One year service warranty is included at no charge via Bo Knows Luxury, LLC, beginning on the date of purchase!
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Condition: Excellent, near mint condition with light wear on the case and clasp. The photos in this album were taken using a macro setup to ensure an accurate representation of the watch's condition. This timepiece has been professionally pressure-tested and thoroughly validated to confirm all functions operate within factory specifications.
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I am a US Air Force veteran with hundreds of successful, verified transactions across the watch collecting community, and via my private network. I am always happy to share references or testimonials with any interested buyers, just ask!
Brand: Jaeger-LeCoultre
Model: Geophysic True Second
Reference: Q8018420
Case Material: Steel
Bracelet Type: N/A
Bracelet Material: N/A
Size: 39.6mm
Dial Color: Silver
Bezel Material: Steel
Bezel Type: N/A
Date: 2015
Condition: Pre-owned
Included Items: Watch with original box and papers
Movement: Automatic
Crystal: N/A
Water Resistance: Up to 50m
Stock ID: X5XGQ
Authenticity Guaranteed
Every timepiece offered by Bo Knows Luxury, LLC undergoes a thorough, multi-point inspection process prior to being listed. Each watch movement is examined, pressure tested to verify water resistance & gasket integrity, and carefully monitored to ensure timekeeping performance falls within original factory specifications. We stand behind the authenticity and mechanical excellence of every watch in our inventory, and want our clients to have complete confidence in their purchases.
Shipping Information
Domestic Shipping
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General Shipping Information
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For international shipping inquiries or to confirm specific delivery timeframes, please contact our customer service team.
Warranty Information
Warranty coverage is included with every purchase through Bo Knows Luxury, LLC. Watches with remaining factory warranty are backed by the original manufacturer service warranty (Panerai "PAM Guard" 8 year warranty for example), while all other pieces include our 12-month in-house service warranty performed by Swiss-trained master watchmakers. Please inquire about the specific warranty details for any timepiece of interest.
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I had a great experience working with Bo. From start to finish, everything was handled professionally and honestly. The watch was described accurately, and when it arrived it was exactly as represented.
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Bo is a passionate seller with a lot of knowledge. Very detailed oriented and focused in service. He made the process extremely easy and replied to all questions promptly. Highly recommended in a world of shady dealers.
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I am so happy with my purchase from this seller. I highly recommend doing business with him. My watch is in excellent condition and was as described.
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Bo is a passionate seller with a lot of knowledge. Very detailed oriented and focused in service. He made the process extremely easy and replied to all questions promptly. Highly recommended in a world of shady dealers.
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I've known Bo for a while by reputation for quite a long time and I was very excited to make my first purchase, an amazing mint condition piece. He made it a simple stress free process with constant clear communication
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The shipping was lightning fast, packaging was secure, and Bo’s communication was stellar. Item was exactly as described and honestly looks like new. Excellent buying experience.
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Frequently Asked Questions
What is the Jaeger-LeCoultre Geophysic True Second 8018420?
The Geophysic True Second is a 39mm steel dress watch featuring a deadbeat seconds complication, where the seconds hand ticks once per second like a quartz watch despite being fully mechanical. It references JLC's 1958 Geophysic chronometer.
What is a true second or deadbeat seconds complication?
Deadbeat seconds is a mechanical complication that makes the seconds hand jump once per second rather than sweep smoothly. It is technically difficult to engineer and was historically prized for precision reading in scientific and navigation contexts.
What movement powers the JLC Geophysic True Second?
The Geophysic True Second uses the in-house automatic Calibre 770 with a 40-hour power reserve, Gyrolab balance for improved efficiency, and the deadbeat seconds mechanism. It is visible through the display caseback.