Slabs

Numismatic slabs are rigid protective containers designed for the preservation and display of collectible coins. Unlike traditional round capsules, these holders feature a rectangular or square shape, offering a larger display surface and better readability of the information associated with the coin.

A slab generally consists of two parts assembled by snap-fit or ultrasonic welding, forming a chemically inert and airtight housing. The materials used, such as high-purity polystyrene or acrylic, ensure optimal transparency and the absence of substance migration that could alter the metallic surfaces of coins.

These containers are particularly suited to certified coins, graded pieces, and high-value specimens requiring maximum protection against humidity, temperature variations, and direct handling. They also allow the insertion of an identification label indicating the year, condition, catalogue reference, or grade assigned by a certification service.

Square slabs are compatible with various coin formats, from small strikes to large modules such as commemorative coins or large-diameter silver coins. Some models are designed to accommodate coins already in an existing capsule, thus doubling the level of protection.

The use of slabs facilitates sorting and storage in a collection, thanks to their standardised dimensions compatible with numismatic portfolios, display trays, and storage boxes. Their regular geometry optimises available space compared to circular containers.

Professional collectors and numismatic dealers use these holders to secure coins during transactions, exhibitions, or auctions, ensuring a standardised presentation and easier traceability of each specimen.