Issued in 1972, this beautifully illustrated stamp commemorates the 400th anniversary of Os Lusíadas, the epic poem by Luís de Camões celebrating Portuguese explorations. The design features the historic Ilha de Moçambique, a key maritime hub during the Age of Discovery, with detailed depictions of fortifications and sailing vessels. The inclusion of period ships reflects Portugal’s naval legacy and global exploration routes. A poetic excerpt from Os Lusíadas enhances its literary and cultural significance. This stamp is a fine example of colonial-era thematic issues combining history, literature, and maritime heritage.