The MyWatchGuru Journal

Authentication walkthroughs, appraisal frameworks, and market analysis from certified horologists who evaluate timepieces every day. Substance over hype.

Authentication
14 MIN READ

How a Certified Horologist Authenticates a Patek Philippe

Step by step, from the case-back inspection to the movement decoration to the serial-number registry — the actual workflow we use to authenticate every Patek before we list it.

Watch Knowledge

What Water Resistance Ratings Actually Mean on Your Watch

Decode the meters, ATM, and bar markings on your watch and learn what 30m, 50m, and 200m really allow in real-world use, plus what to check before buying.

Watch Knowledge

Power Reserve Explained: What It Means and Why It Varies

A friendly, practical guide to what a mechanical watch's power reserve really is, why some run 38 hours and others push past 80, and what the number means for how you actually wear a watch.

Watch Knowledge

Watch Lume Explained: Tritium, Super-LumiNova, and How Glow Really Works

A friendly enthusiast guide to watch lume, from radium and tritium to modern Super-LumiNova and LumiBrite, and what aged glow means for collectors.

Buying & Selling

Service History: Why It Matters for Watch Value

How documented service records shape resale value, what paperwork serious buyers look for, and how to handle gaps in a watch's service timeline before you list or appraise.

Vintage Watches

What Makes a Watch Dial Tropical, and Why Collectors Pay More for It

A practical look at tropical dials on vintage sports watches: the chemistry behind the brown shift, why some examples patina and others don't, and how collectors evaluate authenticity before paying a

Buyer Education

Understanding Watch Movement Types: Quartz, Automatic, and Manual

A buyer-focused breakdown of quartz, automatic, and manual watch movements, comparing accuracy, service intervals, daily wear habits, and what each option signals about how you really use a watch.

Buying Guides

Spotting a Redial on a Vintage Rolex Before You Buy

A practical, enthusiast-level guide to identifying redialed vintage Rolex watches. Learn the visual tells in printing, lume, coronet shape, and minute tracks that separate an honest dial from a repain

Selling Guides

The Collector's Checklist: What to Gather Before Selling a Watch

A practical pre-sale prep guide for watch collectors. Paperwork, condition notes, photography basics, and timing considerations that help you approach a sale prepared.

Buying Guides

Buying a Vintage Rolex Submariner: What Seasoned Collectors Actually Check

A walkthrough of the smaller tells seasoned collectors check on a vintage Submariner: case bevels, dial printing, tritium tone, bezel insert fade, and movement stamps.

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Appraisal
11 MIN READ

Insurance Appraisals: Why Yours Is Probably Wrong

Most insurance appraisals are written from outdated price guides and never updated. Here is how the watch market has shifted — and how to get your coverage in line with replacement reality.

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Trading
9 MIN READ

When to Trade Up: A Framework for the Patient Collector

The grail watch you bought five years ago has appreciated. Should you trade up, hold, or take cash? A clear framework — based on what we see at the desk, not collector forum noise.

More articles publishing weekly. Bookmark the journal or check back soon.