These transparent, plastic or sometimes glassine enclosures safeguard philatelic items from environmental damage, such as humidity, dust, and fingerprints. They typically come in various sizes to accommodate different stamp formats, including singles,... Read more »
Protective, transparent sheaths for postcards are typically made from polypropylene or polyethylene. These offer a barrier against dirt, fingerprints, moisture, and other potential damage. Common sizes correspond to standard postcard dimensions. Archiving... Read more »
