Was GCA21 till 2025.
Reproduction de Mi:BE 4543-4552KB (Bel:BE BL225).
"GC" moyens "Geschenk/Cadeau aan Abonnees/ aux Abonnés" - Gift to subscribers. 3 catégories sont distinguées:
- GCA: Black and white Souvenir sheets with an imperforate copy of the real stamp. Distributed to ordinary subscribers (only stamps) or special subscribers (FDC and FDS)
- GCB: Black and white Souvenir sheet with an imperforate copy of the real stamp out of the "Livre des émissions de l'année"
- GCD: Imperforate Stamps or Souvenir sheets whether or not in color WITHOUT number on the back. Distributed to ordinary subscribers (only stamps)
The categories GCC and GCE are, since 2025, classified under GCA and GCD
