The Leuchtturm Grande M 12-Compartment Numismatic Pouch, reference 326120, pack of 5 units, is a coin filing sheet measuring 67x67mm each. Leuchtturm is a German brand founded in Hamburg in 1917, considered a world leader in collection systems for philately and numismatics, with a catalog of over 6000 items covering more than 140 collection areas. It is made of transparent film free of acids and plasticizers, allowing you to see the coins on both sides without removing them from the sheet and without risk of oxidation from contact with chemicals. It is compatible with the Grande M classifiers from the same brand. The 67x67mm compartments in this Grande M line are among the largest in the Leuchtturm range, suitable for large-format coins or medals.