9 glassine strips per page, double interleaves, rigid binding, available in 4 colours with either white cardboard background or black cardboard background, 32 and 64 pages.
When we mention stockbooks, we refer to stamp albums with card pages featuring horizontal glassine or film strips, into which the stamps are inserted. Even if part of the collection is stored elsewhere, e.g. in illustrated albums, stockbooks can serve as a storage space for duplicates, as a mobile solution for example for trading or to accommodate the most valuable pieces in a deposit box and are an essential piece of kit for philatelists.
W = White Cardboard
S = Black Cardboard