Egypt was part of a Turkish Suzerainty until 1914, when a British protectorate was declared. When Egypt was part of Turkey, a series of governors owed nominal allegiance to the Sultan of Turkey.
Note: The original blog post & BB checklist for Egypt is here. In there I say...
"In reality, since the Suez Canal was built with the French in 1869, the Egyptian government with the Head of State, the Khedive from 1867 to 1914, and the Sultans after 1914, were required to have French and British controllers in the Egyptian cabinet. But finally, an independent Kingdom was established in 1922."
The first stamp issue under the Turkish Suzerainty was a series of seven definitives released January 1, 1866. Let's take a closer look at that first issue.
40 Paras = 1 Piaster