A caravelle with lateen sails, the boat used by Nuno Tristao during his navigations down the coast of Africa (ordered by Henri the Navigator). He reached the Rio Gambia in 1446, during his last voyage. Date of the coin below.
Reverse script
Latin
Reverse lettering
NVNO TRISTÃO
RIO
GÂMBIA
1446
ISABEL · F.BRANCO
1987
incm