The Battle of the Falkland Islands was a naval action between the British Royal Navy and Imperial German Navy on 8 December 1914, during the First World War in the South Atlantic. The British, after a defeat at the Battle of Coronel on 1 November, sent a large force to track down and destroy the victorious German cruiser squadron. The battle is commemorated every year on 8 December in the Falkland Islands as a public holiday.
I have the mint set already in my collection. The above FDC (private) is recent addition to my collection - issued in 1964 - to commemorate 50 Years of the Battle of the Falkland Islands.
The details of 3 ships depicted in other three stamps
HMS Invincible - HMS Invincible was the lead ship of her class of three battlecruisers built for the Royal Navy during the first decade of the twentieth century and the first battlecruiser to be built by any country in the world. During the First World War she participated in the Battle of Heligoland Bight in a minor role as she was the oldest and slowest of the British battlecruisers present. The ship engaged the German light cruiser Cöln, but did not hit her before Cöln was sunk by the battlecruiser Lion. During the Battle of the Falkland Islands, Invincible and her sister Inflexible sank the armoured cruisers Scharnhorst and Gneisenau almost without loss to themselves, despite numerous hits by the German ships.
HMS Kent - HMS Kent was one of 10 Monmouth-class armoured cruisers built for the Royal Navy in the first decade of the 20th century. She was placed in reserve when completed in 1903, but was recommissioned for the China Station in 1906. She remained there until she returned home in 1913 for a lengthy refit.
HMS Glasgow - HMS Glasgow, the sixth ship of that name, was a Town-class light cruiser built for the Royal Navy in the first decade of the 20th century.
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Text Source: shipstamps.co.uk