This 20 centavos commemorative from Chile, issued in 1966, marks the 50th anniversary of the heroic rescue of Sir Ernest Shackleton’s stranded crew from Elephant Island. The stamp features Piloto Luis Pardo, commander of the Chilean naval vessel Yelcho, whose daring Antarctic voyage in 1916 became one of the greatest rescue missions in polar history. The finely engraved portrait is paired with a depiction of the Yelcho navigating icy waters, reinforcing its significance in maritime and exploration history. A sought-after issue for polar exploration, maritime history, and early 20th-century expedition-themed collections.