Folding card holder
Hand-glazed Italian calfskin · Marbled appearance · Plunged lambskin lining
🎨 Le cuir Museum Calf
🪡 Construction & finitions
🏅 Fabrication française
🚚 Livraison & retours
Museum Calf — the glazed calfskin of shoemakers.
Museum Calf is a full-grain Italian calfskin, dyed in several passes and then hand-glazed. It is this manual glazing that blends the shades into each other and creates the marbled appearance: the color is never uniform, it darkens in the hollows and lightens on the raised areas. Thus, no two pieces of leather will yield the same cardholder. Long a preserve of luxury boot-making and shoemaking, it remains rare in leather goods: the patina reads differently depending on the area of the hide, which requires each cut to be placed by eye.
The imprint of Russia leather. On the Museum Russia Calf version, the calfskin also features the cross-grain pattern of Russia leather — the diamond-shaped latticework that characterized "yuft," leather tanned with birch bark and exported from Russia since the 17th century. Its reputation stemmed from its resistance to water and insects, and its very distinctive smell. In 1973, divers explored the wreck of the Metta Catharina, which sank in 1786 off Plymouth with a cargo of these hides: after nearly two centuries underwater, they were still usable. The grain now seen on Museum Russia Calf is the direct descendant of this pattern.
- Full-grain Italian calfskin, glazed and hand-patinated
- Unique marbled appearance — no two cardholders are exactly alike
- Museum Russia Calf: cross-grain inherited from Russia leather
- Folded size 12 × 8 cm — 6 card slots
Assembled and hand-finished in France.
On a patinated leather like Museum Calf, the placement of the cut matters as much as the stitching: it determines how the marbling falls on the flap. Each folding cardholder is therefore individually positioned on the leather, then assembled and hand-finished by French leather craftsmen.
- 6 card slots — folded size 12 × 8 cm
- Full interior lining in caramel plongé lambskin
- Edges worked in 3 stages: sanding, hot-iron creasing, beeswax dyeing
- Cut individually to compose the patina
5/5 ★★★★★
Genuine customer reviews.
"I had been following the publications for some time and eagerly awaited my trip to Paris to see the pieces in person. The experience confirmed all the good things I had thought. The leathers are remarkable, both high-end, ethical, and respectful. The level of finish is exceptional. The welcome mirrors the products: discerning and passionate. The advice is accurate, precise, and perfectly tailored. One can feel a true culture of leather and craftsmanship. An address I wholeheartedly recommend."
"I discovered Atelier Bertrand online while searching for a brand that offered something extra. I've been buying leather pieces for over 25 years: Schott, Chevignon, Redskins, Marlboro… The quality is truly incredible, magnificent! Jérôme is passionate and available. I don't need to look any further…"
“Very happy with my purchase. Go for it with your eyes closed, Jérôme gives excellent advice, and the leathers are magnificent.”
Frequently Asked Questions
What is Museum Calf leather?
This is a full-grain Italian calfskin, dyed in multiple stages then hand-glazed. The manual glazing blends the shades into each other, producing a marbled appearance: the color darkens in the hollows, lightens on the raised areas, and varies from one hide to another. This leather is historically associated with luxury boots and shoes, where it is prized for its depth of color.
What is Russia leather grain?
It's a crosshatch, diamond pattern that identified yuft — Russian leather, tanned with birch bark and exported throughout Europe starting in the 17th century. It was renowned for its water and insect resistance. In 1973, divers explored the wreck of the Metta Catharina, which sank in 1786 off Plymouth: after nearly two centuries underwater, part of its cargo of hides was still usable. The Museum Russia Calf version revives this historic grain.
What's the difference between the two versions?
Cognac Museum Calf relies solely on marbling: a smooth, glazed surface where the patina provides all the relief. Museum Russia Calf adds the cross-grain texture of Russian leather, which gives a palpable feel under the finger and a more graphic appearance. Same leather, same manufacturing, two different characters.
What are the dimensions?
When folded, the card holder measures 12 cm long by 8 cm high and has 6 card slots. The folding format allows you to store more cards than a simple card holder without increasing the thickness in your pocket.
How to care for glazed leather?
Very low maintenance. A soft, dry cloth is sufficient for daily care. Avoid pigmented polishes, which would crush the marbling: prefer a colorless cream, once or twice a year, applied in a very thin layer. The glaze is then revived with a simple buffing with a cloth. The patina will strengthen itself with use.
Delivery and returns?
Free delivery in France for orders over €200. Returns and exchanges are accepted within 14 days, for unused items in their original packaging. Our showroom at 31 Passage Verdeau, Paris 9th arrondissement, is open by appointment if you wish to see and touch the piece before purchasing.
Leather with four centuries of history.
Museum Calf · Hand-glazed Italian Calfskin · Made in France
Unique marbled appearance, Russia leather grain on the Russia Calf version, caramel plongé lambskin lining, hand-finished — six card slots in a folded 12 × 8 cm format.
€140
Free delivery on orders over €200 · 14-day returns · Showroom Paris 9th
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