A Great War Military Medal group of four awarded to 459093 Corporal W. Robinson of the 447th (N) Field Company, Royal Engineers would consist of four medals:

1. The Military Medal was awarded for acts of gallantry and bravery in the field during active operations against the enemy.
2. The 1914-15 Star, was awarded to those who served in any theatre of the war between August 1914 and December 1915.
3. The British War Medal was awarded to all members of the British armed forces who served during the First World War.
4. The Victory Medal was awarded to all members of the British armed forces who served during the First World War.

Corporal W. Robinson of the 447th (N) Field Company, Royal Engineers was awarded the Military Medal for his bravery in the field during the Great War. The specific actions for which the medal was awarded may be recorded in official documents, such as the London Gazette. The value of a specific medal group will depend on factors such as the recipient's military service history, the condition of the medals, and any accompanying paperwork or documents.