Cases and sleeves

Coin cases and sleeves provide individual or grouped protective solutions designed for the storage and handling of collectible coins. Unlike rigid capsules, these flexible or semi-rigid containers offer a lightweight and practical alternative for everyday storage or transportation of coins, medals and tokens.

Numismatic sleeves are generally made from chemically neutral materials such as Mylar, polyethylene or polypropylene, ensuring the absence of plasticiser migration that could damage the metal surfaces or patinas of coins. This characteristic is essential for the long-term preservation of ancient, modern or silver coins, which are particularly sensitive to chemical agents.

Individual cases come in the form of transparent flip envelopes, allowing immediate visual identification of the coin without direct handling. They are available in many standardised formats corresponding to the common diameters of French, European and world coins, from small coins of a few millimetres to large modules such as écus, thalers or large-format modern coins.

Sleeves with press-lock or self-adhesive flap closures facilitate repeated opening and closing without risk of abrasion to the coins. Some models incorporate a white card strip for noting cataloguing information: country of issue, year, catalogue reference, grade or estimated value.

These supplies are particularly suited to numismatists, coin dealers, auction houses and museums that need to handle and organise large quantities of coins. They also represent an economical solution for beginners in numismatics wishing to protect their first acquisitions before investing in more elaborate preservation solutions.

Numismatic cases and sleeves are also available in formats adapted to banknotes, stamp-coins and emergency coins, extending their use to related collecting fields. The total transparency of both faces allows coins to be examined and appraised under the best conditions of legibility.

For optimal preservation, choose sleeves certified PVC-free and acid-free, in compliance with the preventive conservation standards recommended by heritage institutions. Coins stored in these cases should be kept away from direct light, excessive humidity and significant temperature variations, conditions likely to promote oxidation and corrosion of monetary alloys.