FRANCE (1972) Coeur*. Essais de couleur (3) au coin de la feuille. Mois mondial du coeur. Yvert No 1711, Scott No 1333. Très beau!
AVAILABLE AT $40
CAMEROUN (1973) Heart*. Trial color proofs in strip of 5 with multicolor. Scott No C199, Yvert No PA213. Lovely!
AVAILABLE AT $80
MALI (1968) Intertwined hearts*. Trial color proof strip of 5 with multicolor. Sister cities. Scott No 107, Yvert No 109.
AVAILABLE AT $60