Short answer
A fake Hermès Pocket bag fails on the same handful of details every time. Check the blind stamp, the hardware engraving, the stitch angle, the front pocket attachment, and the year letter. If any one of those is off, the bag is counterfeit. The Sac Pocket was made in small runs during the 1980s and early 1990s, so most fakes are copied from photos of one or two surviving examples. That is why the errors repeat instead of varying from bag to bag.
What you need
- A 10x jeweler's loupe
- A phone light for raking illumination
- Seller photos of the interior stamp, strap ends, and hardware
- A realistic sense of price for the model
The checks, in order
- Open the bag and find the blind stamp on the interior back wall. Genuine stamps are struck into the leather, so the letters sit below the surface with the grain pressed down around them.
- Read the year letter and match it to the production window. Hermès year letters follow a published chart. A letter from outside the Sac Pocket run disqualifies the bag.
- Put the loupe on the hardware. Check how deep the engraving cuts and whether the plating tone matches across every piece on the same bag.
- Count stitches across one inch of the flap seam. Hand saddle stitching on Hermès leather runs about seven to nine stitches per inch and slants in one direction on the front and the reverse.
- Inspect the front pocket where it meets the body. Real construction tucks and stitches the edge. Counterfeits hide that seam with edge paint or glue.
- Press a thumb into the leather and watch how it recovers. Then smell it. Genuine Hermès leather smells like tanned hide, not plastic or chemical dye.
- Turn the bag over and check the strap ends and any chain links for solder marks, seams, or uneven plating.
Red flags that end the conversation
A seller who will not send a straight photo of the blind stamp is the first red flag. The second is a price far below resale market for the model. The third is a "new" Sac Pocket, since the model has not been in regular production for decades. Any of those three means stop, no matter how good the rest of the bag looks in photos.
Verification beyond the bag
Hermès does not authenticate bags for the public and will not service counterfeits, so house confirmation is not an option. Auction records and professional resale authenticators are the practical route. Compare the stamp format, hardware, and year letter against documented examples from those sources before you pay.