The Designer Bag Guide: Authentication, Date Codes, Condition and Care
Is it real, what condition is it in, and how do you keep it that way?
Updated
A bag’s value rests on two questions: is it genuine, and what condition is it in? The guides below answer both, brand by brand, and explain the codes and grading language resellers use.
Is it authentic?
A general checklist, then the tells for each major house.
- Is My Designer Bag Authentic? The 7-Point Checklist Before you buy or sell a designer handbag, run these seven authentication checks — stitching, hardware, logo, date codes, and more — plus how to value any bag from a photo.
- How to Tell If a Louis Vuitton Is Real: 6 Checks, From Stitching to Date Code How to tell if a Louis Vuitton bag is real: the monogram, stitching, hardware, vachetta leather and date code — and a free decoder that checks the code’s factory and year fit the bag.
- How to Spot a Fake Chanel Bag: 6 Checks, From Quilting to Serial Number Real vs fake Chanel in six checks: quilting that lines up across the flap, the CC turn-lock, stitch count, chain and hardware, the serial sticker and card, and the leather.
- How to Spot a Fake Gucci Bag Gucci’s GG canvas and logos are copied everywhere, but real bags follow strict rules. Learn the pattern, hardware, serial tag, and stitching checks that expose a fake.
- Designer Bag Date Codes & Serials: How to Read Them and Date Your Bag A date code shows where and when a bag was made, not that it’s real. Read a Louis Vuitton code with the free checker and see how serials and microchips differ.
Condition, care and value
Grading language, storage and the bags that hold value.
- Bag Condition Grades Explained: What Rank A, AB, B and C Really Mean Rank AB, Excellent, Very Good, Shows Wear — every resale site grades bags differently. What each grade hides, which flaws to check, and what each one costs you.
- How to Store a Designer Bag So It Keeps Its Value Most bag damage happens in the closet, not on the street. Learn how to stuff, wrap, position and rotate a bag — and the five storage habits that quietly destroy value.
- The Most Iconic Designer Bags of All Time From the Hermès Birkin to the Chanel 2.55, a handful of handbags became legends and investments. The stories behind the most iconic designer bags — and how to value yours.
Tools for this topic
The essentials
| Brand | Marking | Since about 2021 |
|---|---|---|
| Louis Vuitton | Date code: factory letters + digits for week/month and year | Embedded NFC microchip |
| Chanel | Serial number sticker + matching authenticity card | Metal serial plate + microchip |
| Gucci | Leather tag: “made in Italy”, style and supplier numbers | Tag continues |
| Hermès | Blind stamp letter for year, artisan mark | Stamps continue |
Frequently asked questions
How can I tell if my designer bag is real?
Check stitching, hardware, logos and fonts, materials, lining and interior stamps, and whether the code, serial or chip matches the model’s era. Use a professional authenticator for valuable bags.
Does a date code prove a Louis Vuitton is real?
No. Counterfeiters copy date codes. A code only helps when its format matches the bag’s model, factory and production era.
Which designer bags hold their value?
Hermès Birkin and Kelly bags hold value best, followed by Chanel Classic Flaps and some Louis Vuitton classics in good condition.
What does “Rank AB” mean?
A Japanese resale grade for a used bag with light but visible wear, roughly “Very Good”.
How should I store a designer bag?
Stuff it with acid-free paper, keep it upright in a breathable dust bag, away from sunlight and heat, at moderate humidity — never in plastic.
Sources and further reading
- Fake Goods, Real Dangers — U.S. Customs and Border Protection
- European Observatory on Infringements of Intellectual Property Rights — EUIPO
- Louis Vuitton — Wikipedia
- Chanel 2.55 — Wikipedia
Links checked September 14, 2026.