This Ambar Ideas Numismatic Bag with 42 compartments measuring 30x30mm is ideal for collectors who want to store a larger number of small coins on a single sheet. The transparent and durable material protects the coins from oxidation and direct contact, while allowing for quick viewing of the entire collection. Compatible with standard-sized numismatic covers, this bag facilitates the organization of antique, commemorative, or current circulation coins by category. A practical and economical option for those looking to maximize storage space without compromising the protection of their collection.