Made of oriented polystyrene Contains no agents that might be harmful to postage stamps Special foil will not shrink or discolor It is 100% waterproof and is proven safe for stamps
U.S. Souvenir Sheets thru SIPEX except To Fit: 1994-Assort. 1-148x196 1-178-181 1-183x212 1-108x76 1-181x192 1-148x196 1-178-181 1-183x212 1-108x76 1-181x192 Black Back or Clear 5 Mounts per package
