The complete set in detail
F6427D
Marianne l'engagée : "Lettre Verte" (economic mail 20 gr.), green; vertically imperforated and selfadhesive stamp from coils, signature "phil@poste"
F6428D
Marianne l'engagée : Priority Mail for France 20 gr., red; vertically imperforated and selfadhesive stamp from coils, signature "phil@poste"