FREE Shipping on Purchase Over $1,000
NO $ales TAX Outside California (up to 12% in Savings)
3% Cash Discount!
Trusted Home for Certified Authentic Pre-Owned Watches!

Log in

Perpetual Calendar

Patek Philippe MoonPhase Reference 2438 - Experts Watches

CERTIFIED PRE-OWNED LUXURY PROGRAM / CPO / Patek Philippe / Perpetual Calendar / Vintage Watches

Patek Philippe MoonPhase Reference 2438

The Patek Philippe reference 2438/1 is, without question, one of the rarest and most important perpetual calendar wri...

Read more

Testimonials

As a serious watch collector, I can confidently say that ExpertsWatches.com offers a level of service and expertise that’s truly rare in the vintage and luxury watch world. Raymin has personally matched me with several incredible timepieces — many of which were exclusive VIP offerings not even listed on the website.

David C.

Watch Collector

I’ve also had watches serviced through ExpertsWatches, and the craftsmanship and attention to detail have exceeded my expectations every time. If you're looking for authentic vintage watches, trusted service, or collector-level curation, I highly recommend reaching out.

John M

Watch Collector

This is a destination every collector should know. Thank you again to Raymin and the ExpertsWatches team for the outstanding service.

Patrick T.

Watch Collector

Experts Watches - Vintage Watches - Omega Heuer Breitling

12.0K followers 1.7K posts

Follow @expertswatches

Surprising fact: long before TAG bought Heuer in 1985, Edouard Heuer patented the oscillating pinion in 1887—a small, durable component that made stopwatch chronograph resets cleaner and easier to service—this single invention directly influenced 20th-century motorsport timing and remains in many modern chronographs today.

At Experts Watches we highlight Heuer pieces that still use or celebrate that original chronograph engineering.

Visit the product page through the link in our bio. 💫

#Chronograph #WatchLovers #Heuer #MotorsportWatch #SwissMade #Timepiece #VintageWatches

Surprising fact: long before TAG bought Heuer in 1985, Edouard Heuer patented the oscillating pin...

Keep your rotation organized and ready for wherever you go. Clear Plastic Zipper Watch Pouch - Thick PVC Travel Storage Watch Case - 10 Pack - $24.99 — stack, zip, and stash with zero fuss. Practical, low-key, and actually stylish. 🧳

Click the link in our bio to view it. ⚡

#WatchPouch #TravelWatchCase #ClearPouch #WatchStorage #PVCWatchCase #OrganizeGear #EverydayTravel

2 0

Keep your rotation organized and ready for wherever you go. Clear Plastic Zipper Watch Pouch - Th...

Surprising fact: the first true wristwatch GMT function wasn’t born from airlines but from airline pilots and international businessmen pushing for a simple mechanical way to read two timezones at once—Rolex popularized a separate 24-hour hand with a rotatable bezel for quick reference in the 1950s, but the real leap came when manufacturers started offering independently adjustable hour hands in the 1980s, letting travelers set local time without stopping the seconds—crucial for keeping chronometer accuracy while hopping zones.

At Experts Watches we favor GMTs with independent hour hands for practical travel use and long-term accuracy.

Take a closer look through the link in our bio.

#GMTWatch #TravelTime #PilotWatch #DualTimezone #IndependentHour #ChronometerAccuracy #WatchTravel

Surprising fact: the first true wristwatch GMT function wasn’t born from airlines but from airlin...