YSL Sac De Jour: Expert Authentication Guide (2025)

Last Updated on January 6, 2025 by Ch David

• You have a YSL Sac De Jour
• But you don’t know if it’s a dupe
• So you’re looking to verify its authenticity.

Worry not, this is the guide you need. We’ve made sure this guide works for any Sac De Jour (regardless of color, model, size, and year of manufacture).

How to tell a fake YSL Sac De Jour

You can tell if a Saint Laurent Sac De Jour is fake by looking at the stitched and printed inscriptions inside the bag. Fakes typically have inaccuracies in the thickness of these inscriptions.

1. Stitched label

• Authentic: Text is thinner and a tad bit bigger. Stitching threads look thicker and shorter.
• Fake: Text is too thick and a bit smaller. Stitching threads are too thin and too long.

Is it too hard? Reach out to our expert YSL authenticators:

2. Printed label

Inside the bag, on the other side of the stitched label.

• Authentic:
  • Text is thicker and bulkier.
  • “MADE IN ITALY” text is thick but not as deep into the leather.
• Fake:
  • Text is thinner.
  • “MADE IN ITALY” text is thin and fits way too deep into the leather.

A quick mention:

• The steps we’ve written so far are the BEST ways to authenticate this item
• The next few steps are still reliable methods…
• … but they apply to non-top-versions of replicas available for this item

If in doubt, we recommend double-checking the steps we’ve explained above this line.

2. Exterior branding

Another SLP logo, usually on or below the flap — on the exterior side of the bag.

• Authentic: Text is thicker and consistent, even with different fabrics.
• Fake: Text is thinner, especially in patent leather.

4. Handler

• Authentic: Stitches are consistent in thickness, length, and shape, with no excess threads or empty spaces.
• Fake: Stitches are too long, thinner, and improperly shaped, with excess threads and empty spaces.

5. Zipper

• Authentic: “SAINT LAURENT / PARIS” text fits less deep inside the metal zipper and looks thinner.
• Fake: “SAINT LAURENT / PARIS” text fits deeper inside the metal zipper and looks thicker.

6. Keychain

6.1. Saint Laurent

• Authentic: The “SAINT LAURENT” text is thicker, matching the genuine YSL bag.
• Fake: The “SAINT LAURENT” text is thinner compared to the authentic bag.

6.2. Paris

• Authentic: The “PARIS” text is thicker and smaller, consistent with the genuine YSL SDJ bags.
• Fake: The “PARIS” text is thinner, larger, and uses a different font weight compared to the authentic bags.

7. Lock

• Authentic: The “SAINT LAURENT / PARIS” text is thicker and more defined.
• Fake: The “SAINT LAURENT / PARIS” text is too thin compared to the authentic bag.

8. Pocket

• Authentic: The pocket’s stitches are thinner and more subtle.
• Fake: The pocket’s stitches look too thick and are fit too deep inside the pocket.

9. Buttons

• Authentic: The “SAINT LAURENT PARIS” text looks thinner and more legible.
• Fake: The “SAINT LAURENT PARIS” text is way thicker and harder to read.

10. Key

• Authentic: The key’s “SAINT LAURENT” text looks thicker and more defined.
• Fake: The key’s “SAINT LAURENT” text is too thin.

11. Shape

• Authentic: The bag’s shape is wider and generally larger.
• Fake: The bag’s shape is too narrow and not as wide as it should be.

Shortlist: Authenticate in 30 seconds

You may not have the time to go through each of the detailed steps outlined above.

Hence, we’ve created a rapid 60-second solution for authentication:

1. Interior Label: Examine the label inside your YSL SDJ bag; fake bags often have inaccuracies in inscriptions and stitching thickness.
2. “SAINT LAURENT PARIS” Inscription: Verify the thickness of the “SAINT LAURENT PARIS” inscription inside your bag; fake YSL bags may display text that is too thin or too thick.
3. Exterior Text: Inspect the text on the exterior side of your bag; counterfeit bags often feature incorrect font-weight.
4. Zipper “SAINT LAURENT” Text: Check the “SAINT LAURENT” text on the zipper of your Niki bag; fake bags may have text that is too thick.
5. Handler Stitching: Examine the stitching on the bag’s handle; fake bags may have poorly angled and incorrectly thick stitching.
6. Keychain Text: Look at the text on the bag’s keychain; counterfeit keychains often exhibit text that is too thick or too thin.
7. Lock Text: Inspect the text on the bag’s lock; fake YSL bags tend to have thin text on the lock.
8. Pocket Stitching: Analyze the stitching on the bag’s pocket; fake items may have excessively thick threads.
9. Button Details: Examine the buttons on your bag; fake bags may feature oversized and thick “SAINT LAURENT PARIS” curved text.
10. Key Engraving: Look at the text engraved on the key of your YSL SDJ bag; counterfeit bags often have text that is too thin.
11. Bag Profile Shape: Check the bag’s shape from the side profile; fake YSL Sac de Jour bags may appear too narrow.

Expert YSL Sac De Jour authentication

If you require assistance with authenticating your YSL SDJ bag, we’re here to help.

• Simply provide us with high-quality pictures of your Sac De Jour.
• We’ll respond with results within 24 to 48 hours.
• Includes a detailed report explaining why we believe your bag is either fake or authentic.

This concludes our guide on differentiating between real and fake Yves Saint Laurent Sac de Jour bags.

Need our opinion on your item’s authenticity? It’s a service we provide.

Get a fully-detailed report for why you have a real or fake item. Takes less than 48 hours!

Alternatively, use our free resources: written guides and video tutorials.

Thank you for reading this,

Ch Daniel and Ch David