????Lukanga, sans titre, nn daté, Huile sur papier, 30 x 41.5 cm, Collection Pierre Loos, Bruxelles, © Lukanga.

When Ghana achieved its independence from Britain in 1957, I was in my stamp-collecting phase, and for me the most important consequence of that momentous event was the issue of garishly multi-colored stamps by the newly independent country to celebrate it. Until then, the stamps of the Gold Coast (as Ghana had been known) were typical of those of all British colonies: a little oval in the right-hand corner with the reigning monarch’s portrait, accompanied by an engraved scene of the...