SF-Special Block mounts 297x210 mm double sealItem number: 800411
'Simply the best and safest mount for your stamps.
• Block mounts offer maximum protection against sticking, discoloration, dust, and humidity.
• Stamps held securely in place by strong clamp-type seal.
• SF mounts are made from 100% polystyrene (free from softening agents, acids and stabilizing chemicals).
• Anti-reflection coating prevents light interference.
• Special adhesive on reverse side of film (simply moisten and affix).
d = double seal (closed top and bottom)
Special block mounts size: 297x210 d