Answer first

A fake Hermes Kelly 25 usually fails on five points: the blind stamp, the saddle stitching, the turnlock engraving, the base feet, and the overall proportions. Measure the bag, read the stamp, and inspect the stitches under raking light before you look at anything else. Most copies get the silhouette close and the small hardware details wrong.

Prerequisites

  • A genuine Kelly 25 or detailed reference photos for side-by-side comparison
  • A metric ruler or caliper
  • A bright desk lamp and a loupe or phone macro lens
  • A soft measuring tape for strap and handle checks

Step 1: Measure the body

  1. Set the bag flat on a table and measure the widest point of the base with a ruler.
  2. Record height at the center back panel and depth at the base gusset.
  3. Compare the numbers to the Kelly 25 spec of roughly 25 cm wide, 19 cm tall, and 9 cm deep.

Copies often run 1 to 2 cm wide in one direction because the pattern was scaled from a photo. A bag that measures 27 cm across is not a Kelly 25, regardless of what the seller calls it.

Step 2: Read the blind stamp

  1. Open the flap and find the blind stamp on the interior leather, usually on the back panel or the strap behind the turnlock.
  2. Check that the letters are crisp, evenly spaced, and pressed into the leather rather than printed on it.
  3. Confirm the stamp carries a shape, a year letter, and a craftsman ID in a consistent layout.

Fake stamps look shallow, crowded, or uneven in depth. Hold a light at a low angle across the leather. Real stamping compresses the grain and leaves sharp interior edges; hot foil or print sits on the surface and reflects flat.

Step 3: Inspect the stitching

  1. Turn the bag so light rakes across the top flap seam.
  2. Count stitches along a 1 inch section and confirm a consistent 8 to 10 per inch.
  3. Look for the slight diagonal lean of a hand saddle stitch on both faces of the seam.

Machine lock stitch runs flat and straight with tight, uniform loops. Saddle stitch angles and holds tension even when the thread is pulled. Loose ends, skipped stitches, or a seam that drifts off the edge line are the clearest tells on a copy.

Step 4: Examine the hardware

  1. Open the turnlock and look at the engraving on the plate with a loupe.
  2. Check that the lettering is deep, centered, and free of burrs or double edges.
  3. Count the protective feet on the base and confirm four, evenly set and firmly seated.

Genuine hardware has weight and a clean mirror finish. Replicas use lighter castings, shallow laser engraving, and feet that sit proud of the leather or wobble under finger pressure.

Step 5: Check leather and edge paint

  1. Press a thumbnail into the leather on the back panel and watch how the grain springs back.
  2. Run a finger along the edge paint at the flap corner and feel for thickness and evenness.
  3. Look for drips, ridges, or paint that has bled onto the face of the leather.

Edge paint on an authentic bag is thin, smooth, and applied in matched color. Copies show a heavy bead, a visible seam line where the paint meets the leather, and peeling at stress points.

Where replicas usually fall short

  • Blind stamp depth and letter spacing
  • Thread weight and stitch angle at the flap corners
  • Turnlock engraving depth and plate finish
  • Edge paint thickness at the gusset
  • Handle attachment symmetry

Photos to request before you buy

  1. Ask for a straight-on shot of the blind stamp with the light angled across it.
  2. Request a macro shot of the turnlock plate and the base feet.
  3. Ask for a top-down photo of the flap seam with a ruler in frame.