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Product description
Block mounts offer maximum protection against sticking, discolouration, 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 stabilising chemicals). Antireflection coating prevents light interference. Special adhesive on reverse side of film (simply moisten and stick down!).
d = double seal (closed top and bottom)
Special block mounts size: 297x210 d
