This striking 1 Gulden blue stamp from the Netherlands features a finely engraved left-facing portrait of Queen Wilhelmina, crowned and framed within ornate scrollwork. Issued between 1899 and 1921, these high-value stamps were part of the "Fur Collar" definitive series, widely admired for their detailed craftsmanship. The denomination of 1 Gulden made it a high postal value, often used on heavier or international mail. Collectors especially value this issue for its historical context, as it reflects the early reign of Queen Wilhelmina, who would become the longest-reigning Dutch monarch of the 20th century. A must-have for specialists in Dutch philately and classic European issues.