Kelly or Birkin? How Collectors Tell Hermès' Icons Apart
Two bags define Hermès for most collectors. Both are made by a single artisan, both close with a turn-lock and padlock, and both hold their value remarkably. Yet they were born half a century apart and are built for different lives. Japan is one of the deepest markets for both, often with complete sets of accessories.
Two histories
The Kelly descends from a saddle-bag carrier made by Hermès in the 1930s. It took its name from Grace Kelly, who was photographed shielding herself with one in the 1950s. The Birkin was designed in 1984 after a conversation between Hermès chairman Jean-Louis Dumas and Jane Birkin, who wanted a bag large enough to carry everything she needed.
How to tell them apart
- Handles. A Kelly has one top handle and usually a detachable shoulder strap. A Birkin has two handles and no strap.
- Flap. A Kelly's flap closes over the front with the turn-lock. A Birkin's flap is often worn open, its straps tucked behind the lock.
- Shape. The Kelly is a slim trapezoid. The Birkin is wider, deeper and more like a tote.
Sellier and retourné
Kelly bags come in two constructions. Sellier bags are stitched on the outside, with sharp edges and a rigid structure. Retourné bags are stitched inside out and turned, so they are softer, with rounded edges. The Birkin is almost always retourné in construction, with a sellier version made in small numbers. Collectors often prefer sellier Kellys for their formality and retourné for everyday ease.
Sizes
Kelly bags have been made in sizes from the tiny Mini Kelly (20 cm) through 25, 28, 32 and 35 to 40 and beyond. Birkin sizes include 25, 30, 35 and 40, with larger travel sizes. The number is the width in centimetres. In Japan, smaller sizes such as Kelly 25 and Birkin 25 are especially sought after.
The accessories
A complete set usually includes the clochette (the leather key bell), two keys, the padlock (cadena), a rain cover, the dust bag and the box. For a Kelly, the shoulder strap belongs to the set. A missing padlock or keys affects value more than a missing box.
Checking a pre-owned example
- Read the blind stamp for the year; see Hermès Date Stamps Explained.
- Check that the padlock and key numbers match.
- Look at corners, handle bases and the edges of the flap for wear.
- Check hardware plating, especially gold-plated hardware, for rubbing.
- Read the leather; see Hermès Leathers Explained.
Questions collectors ask
Which holds value better?
Both are among the strongest performers in pre-owned luxury. Condition, colour, leather, size and completeness of the set decide more than the model.
Is a retourné Kelly less valuable than a sellier?
Not necessarily. Preference varies by size and leather. Demand for both is strong.
Why are Hermès bags in Japan often so well kept?
Japanese owners store them boxed, in dust bags, and keep every accessory. Read Japanese Condition Ranks Explained.