PORTUGAL - CIRCA 1991: a stamp printed in the Portugal shows Vasco da Gama, Portuguese Navigator and Explorer who Found Sea Route to India, circa 1991 Stock Photo - Alamy
1888 Austria Revenue Forbin #- AT STM293 15 Kroner Stempel Marke Used | Europe - Austria, Stamp / HipStamp
PORTUGAL - CIRCA 1993: a stamp printed in the Portugal shows Ferdinand Magellan, Portuguese Navigator and Explorer, circa 1993 Stock Photo - Alamy