DAHOMEY-Imperforate (1971) Hands holding heart. Globe. Fight against racism. Set of 2 imperforate corner blocks of 4. Scott Nos 283-4, Yvert Nos 303-4. (ImageA)

CHAD-Deluxe proof (1972) Heart. Scott No 251. Yvert No 244. International Heart Month. Deluxe sheet. (ImageA)

SENEGAL-Imperforate (1972) Heart. WHO emblem. Imperforate corner block of 4. World Health Month. Scott No 359, Yvert No 363. (ImageA)

MALI-Imperforate (1972) Heart. Imperforate corner block of 4. World Health Day. Scott No C146, Yvert No PA146. (ImageA)

CAMEROUN-Deluxe proof (1973) Heart. Deluxe sheet, 25th anniversary of WHO. Scott No C199, Yvert No PA213. Lovely! (ImageA)

CONGO-Imperforate (1978) Heart. Electrocardiogram. Imperforate corner block of 4. Fight against hypertension. Scott No 487, Yvert No 532. (ImageA)

NIGERIA-Varieties/Error (1992) Anatomy of heart. Blood pressure machine. Anatomy of chest cavity. Misperforated M/S of 4. Each stamp is split in 4 parts! Scott No 597a, Yvert No BF11. (ImageA)

NIGERIA-Imperforate (1992) Anatomy of heart. Blood pressure machine. Anatomy of chest cavity. Imperforate M/S of 4. Scott No 597a, Yvert No BF11. (ImageA)

FRANCE-Artist proof (2005) Heart with polka dots. Die proof in brown signed by the engraver JUMELET. Scott No 3089,Yvert No 3747. (ImageA)

FRANCE-Artist proof (2005) Heart with bird and flowers. Die proof in brown signed by the engraver JUMELET. Scott No 3090,Yvert No 3748. (ImageA)