A stamp is small, the sheet is a folder, and neither tolerates a south window. The gum on the back sticks to the neighboring side in the damp, and then the price is gone without anyone having forced the door. In the overview Security for collectors, stamps belong with paper.

What breaks without a thief

Light bleaches the colors that make the premium in the catalog. Damp cockles the paper and marries the gum to the pocket. Rusty clips and acidic pre-war adhesives migrate into the piece. You handle it by the edge, with tweezers that do not press a groove, and you do not glue an old hinge back on so that it looks "neat".

When someone comes

Albums on the shelf are taken in one pass. Stamped bulk is often worthless to the offender and, for you, the work of years. The few sheets with a real price do not lie on the same meter of shelving. They lie in the document safe, the albums of the everyday collection in a second, inconspicuous place.

The folder

Michel or catalog number, cancelled or mint, whether hinged, purchase receipt for the expensive items. A photo of the sheet. You describe the bulk of the collection as a holding with its main areas, the top pieces line by line.