Every year the supplement U.N.O. Geneva appears, which contains sheets of extra heavy paper (170 grs.) with plasticizer-free mounts.
Here you can store the stamps issued in the previous year.
On all sheets there are frames where you can put the stamps, usually with a picture of the stamp itself. On all these frames are transparent mounts to safely place your stamps in.
The Supplement U.N.O. Geneva contains the year 2015.
The content consists of 6 pages; 2015-1,2,2a,B1,B2,B3.