Every year the supplement C.N.E.P. (1f), separate blocks for Boules de Moulins, Ballons Montes, Postal stationery, booklets and Souvenir sheets appears, which contains sheets of extra heavy paper (170 grs.) with plasticizer-free mounts.
Here you can store the stamp blocks issued in the previous year.
On all sheets there are frames where you can put the blocks, usually with a picture of the block itself. On all these frames are transparent mounts to safely place your blocks in.
The Supplement France C.N.E.P. (1f) contains the year 2017.
The content consists of 1 page; CNEP33.