The complete set in detail
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F6426B
Marianne l'engagée : Economic Mail for France 20 gr.), grey, selfadhesive stamp, signature "phil@poste"
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F6427B
Marianne l'engagée : "Lettre Verte" (economic mail 20 gr.), green, selfadhesive stamp, signature "phil@poste"
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F6428B
Marianne l'engagée : Priority Mail for France 20 gr., red, selfadhesive stamp, signature "phil@poste"
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F6431B
Marianne l'engagée : Datamatrix - Priority mail 20 gr. for the whole world, violet, selfadhesive stamp