LT SF Strips 217x21mm, black backing film

Leuchtturm Albenverlag (Germany) 
SF Strips to cut for Stamps, Format 217x21 mm, black backing film
pack of 25, Made from 100 % polystyrene, free from acid and chemical softeners, with adhesive reverse side, (article 335 835 yellow package).

Remarks to Pre-cut SF-mounts: LIGHTHOUSE pre-cut SF-mounts for most standard sizes. The size of the mount is cut 4 mm larger than the actual stamp for that nice "centered" look.