The reign of Queen Wilhelmina is from 23rd November, 1890 to 4th September, 1948. On 4th September, 1948, Queen Wilhelmina abdicated in favour of her daughter Juliana.
After the abdication, her title became "Her Royal Highness Princess Wilhelmina of the Netherlands". In this statue, she rode on a side saddle. Side saddle is specific for ladies while wearing fine clothing.